Toby Fox

For his work on Deltarune, see Toby Fox.

Robert F. "Toby" Fox, (born October 11, 1991), historically known as FwugRadiation or simply Radiation; is a music composer and video game developer. He is best known for developing the critically acclaimed RPG Undertale and producing its soundtrack in 2015. He often portrays himself in video games and on the internet using an avatar of a pixelated white dog, known as the Annoying Dog.

Early life

Toby Fox was born on October 11, 1991 to Robert and Barbara Fox in Manchester, New Hampshire. Toby had three brothers, with whom he programmed role-playing video games using RPG Maker 2000. Being the son of a retired paraprofessional in Manchester schools, Toby was schooled in Manchester High School Central; and would later be a student at Northeastern University, in Boston.

Fox originally started out as a forum member at the EarthBound fansite STARMEN.NET under the alias "Radiation", where he managed the website's PK Hack forum up until 2011. He first entered the public eye with EarthBound: Halloween Hack, also known as Press the B Button, Stupid!, a romhack game submission for STARMEN.NET's 2008 Halloween Funfest.

Toby had discovered Homestuck in the later 2000s. In 2010, the work of the Homestuck Music Team's musicians inspired him to become a music composer, with him implementing as many motifs from the other musicians as he could. His work with Homestuck caused him to amass a considerable fanbase within the webcomic's community. Toby later became friends with the webcomic's creator Andrew Hussie, whom he closely worked with when he became the leader of the Homestuck Music Team, organizing the musicians and editing their tracks to fit with the comic's scenes. Through Homestuck, he had also first conversed with Temmie Chang via Tumblr in regards to one of her fanarts for the webcomic.

Undertale

Toby Fox's ambition to create his own video game started while he was in college, during a night when he was sleeping with a high fever; in which he had a very clear fever dream about the ending of a game. This video game would eventually become Deltarune, to which Undertale started as a stepping stone.

Fox began coding Undertale on January 11, 2013. He used the video game engine Game Maker 8, as well as Microsoft Paint for the design of sprites. The program Fox used to make the music of Undertale was FL Studio; according to music tags in the beta version of Stronger Monsters from his website and the tracks he made for Temmie Chang's RPG, he uses FL Studio 10. Development for Undertale was partially made during Fox's stay in Andrew Hussie's basement.

Toby first publicly announced this video game in the PK Hack section of STARMEN.NET, where he posted a screenshot of the game and a song used in it (which was an early version of Enemy Approaching), and he jokingly claimed that the game would be an EarthBound ROM hack called UnderBound 2. On May 2, 2013, Fox sent a demo of Undertale to the video game merchandising company Fangamer; after being met with positive reviews, a public demo was later released on May 23, 2013. Undertale was later funded thanks to a Kickstarter campaign that raised $51,124 from 2,398 people.

During the 10th Anniversary Stream, Toby stated that he enjoyed creating character personalities that do not always align with their appearance, as he considers it accurate to reality. This also includes wanting all NPCs to have different sprites, personalities, and quirks.

Created characters

Along with being the main developer and composer of the game, Fox is credited with the conception of the following characters;

• Froggit and Final Froggit
• Whimsun
• Moldsmal
• Vegetoid (with Temmie)
• Migosp
• Napstablook
• Papyrus (with Temmie) and Sans (both of them with special inspiration by J.N. Wiedle)
• Gyftrot (possibly)
• Doggo
• Dogamy and Dogaressa (possibly)
• Lesser Dog and Greater Dog (both with Temmie)
• Undyne (design only)
• Alphys (design)
• Moldbygg
• Mad Dummy
• Mad Mew Mew (with Temmie and Gigi D.G.)
• Shyren
• Mettaton (special inspiration by Pauli Kohberger, Sarah, and J.N. Wiedle)
• Tsunderplane
• Pyrope
• Royal Guards
• Whimsalot
• Astigmatism
• Madjick
• Knight Knight
• Asgore and Toriel

Inspirations

Toby Fox has cited several games that served as inspiration during Undertale's development. These include:

• moon: Remix RPG Adventure, for numerous concepts and themes;
• MOTHER 3, for boss battles and possibly the prominent usage of leitmotifs;
• the Touhou Project series by ZUN, for music and gameplay;
• Shin Megami Tensei, for the ACT and MERCY options.

Personal life

Toby Fox has often avoided being interviewed. Hence, his personal life is largely unknown.

Discography

Album	Tracks Composed
Midnight Crew: Drawing Dead (February 4, 2010)	"Liquid Negrocity", "The Ballad of Jack Noir" (Original Version)
Homestuck Vol. 4 (April 13, 2010)	"Carefree Victory", "Atomyk Ebonpyre", "Black"
Homestuck Vol. 5 (June 13, 2010)	"Skaian Skirmish", "Savior of the Waking World", "Happy Cat Song!", "Hardchorale", "White", "Octoroon Rangoon", "Lotus Land Story", "Versus", "Dupliblaze COMAGMA", "Moonshatter", "Sunsetter", "Get Up", "Vertical Motion", "Amphibious Subterrain", "Snow Pollen", "Descend"
Alternia (July 18, 2010)	"Crustacean", "Showdown", "mIrAcLeS", "The Lemonsnout Turnabout", "Phaze and Blood", "psych0ruins", "Walls Covered In Blood", "dESPERADO ROCKET CHAIRS,", "Death of the Lusii", "Virgin Orb", "The La2t Frontiier", "Skaian Summoning", "Spider's Claw (Bonus)", "Staring (Bonus)", "Keepers (Bonus)"
Squiddles! (August 26, 2010)	"Squiddles the Movie Trailer - The Day the Unicorns Couldn't Play"
The Baby Is You (October 13, 2010)	"THROGUH SONG", "IM HAVING A BABY, AND THE BABY IS YOU", "bootes", "ROSE PRAGNET (feat. ????)", "the rose rap (feat. von fawn)", "uh oh", "vs. bros", "A BABY IS BORN (feat. artemis251 as luigi, chorus singer, kid, and hella jeff)"
The Felt (December 2, 2010)	"Humphrey's Lullaby", "English"
Homestuck for the Holidays (December 25, 2010)	"Carefree Perigee"
Homestuck Vol. 6: Heir Transparent (January 5, 2011)	"Umbral Ultimatum", "MeGaLoVania", "Gaia Queen", "Wacky Antics", "Nic Cage Song", "A Tender Moment"
AlterniaBound (March 14, 2011)	"Karkat's Theme", "Terezi's Theme", "Vriska's Theme", "FIDUSPAWN, GO!", "Darling Kanaya", "Eridan's Theme", "Nautical Nightmare", "Nepeta's Theme", "Killed by BR8K Spider!!!!!!!!", "Catapult Capuchin", "Science Seahorse", "A Fairy Battle", "The Blind Prophet", "AlterniaBound", "You Won A Combat", "Rest A While"
Homestuck Vol. 7: At the Price of Oblivion (May 31, 2011)	"Terezi Owns", "Rumble at the Rink", "Earthsea Borealis"
The Wanderers (July 14, 2011)	"Mayor Maynot", "Riches to Ruins Movements I & II", "Tomahawk Head"
Land of Fans and Music (July 30, 2011)	"Starkind"
Homestuck Vol. 1-4 (October 24, 2011)	"John Sleeps / Skaian Magicant" (retroactively added to Vol. 2)
Homestuck Vol. 8 (October 25, 2011)	"Love You (Feferi's Theme)", "Davesprite", "Frostbite", "The Lost Child", "Judgement Day", "Penumbra Phantasm" (featured in the third part of "Cascade")
Improvised Touhou Music with Annoying Commentary (November 29, 2011)	"Girl's Pretty Dress Dress, Do Your Best Now", "Magical Hopalong Cassidy Station", "An Apple Disaster!"
I Miss You - EarthBound 2012 (January 1, 2012)	"Fallen Down", "A New Line", "Megalo Strike Back", "Checkerboard Memories"
coloUrs and mayhem: Universe A (April 2, 2012)	"~~SIDE 1~~", "~~SIDE 2~~", "~~ADDITIONAL MAYHEM~~"
coloUrs and mayhem: Universe B (April 13, 2012)	"~~SIDE 1~~", "~~SIDE 2~~", "~~ADDITIONAL MAYHEM~~"
Homestuck Vol. 9 (June 12, 2012)	"Hate You", "ASSAULT", "Stress", "Moonsetter", "Frustracean (Bonus)"
Make Music, Throw Music: A Yoshi's Island Tribute (October 26, 2012)	"Daffodil Petals", "Terrapin Tower"
Cherubim (March 14, 2013)	"The Lordling"
Undertale Demo OST (May 21, 2013)	"Once Upon a Time", "Menu", "Your Best Friend", "Fallen Down", "Ruins", "Anticipation", "Unnecessary Tension", "Enemy Approaching", "Ghost Fight", "Determination", "Home", "Heartache", "End", "Nyeh Heh Heh!", "Home (Music Box)", "Empty House"
UNDERTALE Soundtrack (September 15, 2015)	"Once Upon a Time", "Start Menu", "Your Best Friend", "Fallen Down", "Ruins", "Uwa!! So Temperate♫", "Anticipation", "Unnecessary Tension", "Enemy Approaching", "Ghost Fight", "Determination", "Home", "Home (Music Box)", "Heartache", "sans.", "Nyeh Heh Heh!", "Snowy", "Uwa!! So Holiday♫", "Dogbass", "Mysterious Place", "Dogsong", "Snowdin Town", "Shop", "Bonetrousle", "Dating Start!", "Dating Tense!", "Dating Fight!", "Premonition", "Danger Mystery", "Undyne", "Waterfall", "Run!", "Quiet Water", "Memory", "Bird That Carries You Over A Disproportionately Small Gap", "Dummy!", "Pathetic House", "Spooktune", "Spookwave", "Ghouliday", "Chill", "Thundersnail", "Temmie Village", "Tem Shop", "NGAHHH!!", "Spear of Justice", "Ooo", "Alphys", "It's Showtime!", "Metal Crusher", "Another Medium", "Uwa!! So HEATS!!♫", "Stronger Monsters", "Hotel", "Can You Really Call This A Hotel, I Didn't Receive A Mint On My Pillow Or Anything", "Confession", "Live Report", "Death Report", "Spider Dance", "Wrong Enemy !?", "Oh! One True Love", "Oh! Dungeon", "It's Raining Somewhere Else", "CORE Approach", "CORE", "Last Episode!", "Oh My...", "Death by Glamour", "For the Fans", "Long Elevator", "Undertale", "Song That Might Play When You Fight Sans", "The Choice", "Small Shock", "Barrier", "Bergentrückung", "ASGORE", "You Idiot", "Your Best Nightmare", "Finale", "An Ending", "She's Playing Piano", "Here We Are", "Amalgam", "Fallen Down (Reprise)", "Don't Give Up", "Hopes and Dreams", "Burn in Despair!", "SAVE the World", "His Theme", "Final Power", "Reunited", "Menu (Full)", "Respite", "Bring It In, Guys!", "Last Goodbye", "But the Earth Refused to Die", "Battle Against a True Hero", "Power of "NEO"", "MEGALOVANIA", "Good Night"
[S] Collide. (April 6, 2016)	"Oppa Toby Style"
Hiveswap Act 1 OST (September 14, 2017)	"Snake Escape", "Joey Claire, Extraordinaire", "Half-Harley Manor", "Relatively Visible Darkness", "Bedroom for an Annoying Dog", "Jude Harley, Bizarrely", "Final Spice", "Singular Peril", "A More Defensible Position", "Open The Door", "Keep Your Head Down", "Oh Whoa, What's This", "Some Kind of Alien", "Rustblood", "Lofted Gunpile", "We Shall Go Together", "Intermission 1", "B-SIDE: How it Could Have Gone", "B-SIDE: Alternate Recipe", "B-SIDE: SPOOKTUNE"
DELTARUNE Chapter 1 OST (November 1, 2018)	"ANOTHER HIM", "Beginning", "School", "Susie", "The Door", "Cliffs", "The Chase", "The Legend", "Lancer", "Rude Buster", "Empty Town", "Weird Birds", "Field of Hopes and Dreams", "Fanfare (from Rose of Winter)", "Lantern", "I'm Very Bad", "Checker Dance", "Quiet Autumn", "Scarlet Forest", "Thrash Machine", "Vs. Lancer", "Basement", "Imminent Death", "Vs. Susie", "Card Castle", "Rouxls Kaard", "April 2012", "Hip Shop", "Gallery", "Chaos King", "Darkness Falls", "The Circus", "THE WORLD REVOLVING", "Friendship", "THE HOLY", "Your Power", "A Town Called Hometown", "You Can Always Come Home", "Before the Story"
Hiveswap Friendsim (December 15, 2018)	"CLOWNFUCKER", "yall know i just do the music right"
YIIK: A Postmodern RPG (January 17, 2019)	"Into the Mind (Toby Fox)"
Little Town Hero OST (October 16, 2019)	"3 Kids"
Super Smash Bros. Ultimate OST (September 4, 2019)	"MEGALOVANIA"
Kiwi Blitz	"Kiwi Blast"
Pokémon Sword and Shield OST (November 15, 2019)	"Battle Tower"
Dweller's Empty Path OST (July 10, 2020)	"Dweller's Empty Path (Trailer Theme)", "Somewhere in a Forest", "Yoki's House", "Leaves Fill The Path", "Small Village", "Aimottle's House", "Officeish Space", "Beneath the Towering Castle", "Buy Something Will You ...Can't", "Inside the Castle", "Always this graveyard is gloomy", "Cool Cat", "Underground Path", "Dragon Temple", "Breath of the Dragon", "Forgotten Memories", "Flying Through A Starry Sky", "Frozen Palace", "Be Brave!", "Breezy Palace", "Temmie's Room"
HIVESWAP: ACT 2 Original Soundtrack (November 26, 2020)	"Above Sea Level", "Studio Space", "Raw Honey", "Ticket to Ride: Quadrant Confusion", "Ticket to Ride: Trial Variation", "Ticket to Ride: The Other Half", "Conductor's Cabin"
OMORI GINO'S JUKEBOX (April 30, 2021)	"ANOTHER HOLIDAY (MERRY CD)"
U.U.F.O (July 11, 2021)	"Myths You Forgot"
DELTARUNE Chapter 2 OST (September 17, 2021)	"Faint Glow", "Girl Next Door", "My Castle Town", "Ohhhhohohoho!", "Queen", "A CYBER'S WORLD?", "A Simple Diversion", "Almost To The Guys!", "Cool Beat", "When I Get Mad I Dance Like This", "Cyber Battle (Solo)", "When I Get Happy I Dance Like This", "Sound Studio", "Berdly", "Smart Race", "Faint Courage (Game Over)", "WELCOME TO THE CITY", "Mini Studio", "Holiday Studio", "Cool Mixtape", "HEY EVERY !", "Spamton", "NOW'S YOUR CHANCE TO BE A", "Elegant Entrance", "Bluebird of Misfortune", "Pandora Palace", "KEYGEN", "Acid Tunnel of Love", "It's Pronounced "Rules"", "Lost Girl", "Ferris Wheel", "Attack of the Killer Queen", "Giga Size", "Powers Combined", "Knock You Down !!", "The Dark Truth", "Digital Roots", "Deal Gone Wrong", "BIG SHOT", "A Real Boy!", "Dialtone", "sans." "Chill Jailbreak Alarm To Study And Relax To", "You Can Always Come Home", "Until Next Time", "Before the Story", "Berdly (Rejected Concept)"
Pokémon Scarlet - Violet + The Hidden Treasure of Area Zero Super Music Collection (Japan: February 7, 2024, International: October 30, 2024)	"Welcome to Paldea", "Across the Skies of Paldea", "First Meeting", "By the Shore", "Escape from the Cave", "South Province", "Battle! (South Province Wild Pokémon)", "Los Platos", "A Stroll through the South Province", "Mesagoza", "A Tune at Mesagoza", "The Academy", "Your Dorm Room", "Tera Raid Battle", "Victory! (Tera Raid Battle)", "Victory! (Titan)", "A New Power for Your Ride", "Alfornada", "Battle! (Director Clavell)", "To the Great Crater of Paldea", "Area Zero", "Battle! (Area Zero Pokémon)", "The Gate Opens", "Battle! (Area Zero Pokémon 2)", "Activating Offensive Protocols", "Battle! (Zero Lab)", "Victory! (Zero Lab)", "Batʇlə! (■■■)", "The Way Home", "Get a Little More Fun Out of this Adventure!", "The Academy Ace Tournament", "Crystal Pool", "Area Zero Underdepths", "Terapagos Reawakened", "What the Hidden Treasure Needs", "Terapagos Goes Berserk", "Battle! (Terapagos, the Hidden Treasure of Area Zero)", "Caught Terapagos!"
CHUNITHM OST (December 11, 2024)	"Theatore Creatore"
DELTARUNE Chapter 3+4 OST (June 4, 2025)	"Flashback (Excerpt)", "Feature Presentation", "And Now For Today’s Sponsors…!", "MIKE, the BOARD, please!", "Sandy Board", "Adventure Board", "Query?", "Quiz!", "Dig! Dig! To The Center of the Earth!", "Pushing Buddies", "Ruder Buster", "Physical Challenge", "Board Clear!", "Welcome to the Green Room", "Vapor Buster", "Paradise, Paradise", "Raft Ride", "SOUTH OF THE BORDER!!", "Sound Check", "Raise Up Your Bat", "KING OF ROLYPOLY", "Glowing Snow", "Big City Board", "Doom Board", "Metaphysical Challenge", "TV WORLD", "It’s TV Time!", "Hall of Fame", "Breath", "Black Knife", "Crickets", "Dump", "SWORD", "NORTHERNLIGHT", "GLACEIR", "BIT ROOTS", "ERAM", "BURNING EYES", "Old wooden rafters", "Hymn", "Another day in hometown", "Friends" "Castle Funk", "Knock You Down!! (Rhythm Ver.)", "Gingerbread House", "The distance between two", "C", "ATRIUM", "Dark Sanctuary", "From Now On (Battle 2)", "Gyaa Ha ha!", "Fireplace", "A DARK ZONE", "Mysterious Ringing", "Ever Higher", "Wise words", "Piano that may not be played that well", "Hammer of Justice", "12am", "The Second Sanctuary", "Ripple", "13am", "The Third Sanctuary", "Dark Place", "Heavy Footsteps", "Crumbling Tower", "SPAWN", "GUARDIAN", "Need a hand!?", "The place where it rained", "The Ol’ Jitterbug", "Neverending Night", "The LEGEND...?", "With Hope Crossed On Our Hearts", "Volume Adjustment", "Catswing", "AIRWAVES", "Concert for you"
OFF Original Soundtrack (September 6, 2025)	"WHITE MEAT (ZONE 1)", "WHITE ROT (ZONE 2)", "WHITE CARCASS (ZONE 3)", "HOUR HAND", "PHOENIX", "OPERETTA OF 1000 LASHES", "SEPARATION", "CHOSEN ANEW," "SOURCE ‐ CALM", "ARIES ‐ COB"

Gallery

• 
  Toby Fox with a backwards hat and sunglasses.
• 
  Toby Fox (on the far left) next to Tim Schafer, Alexey Pajitnov, and Patrice Désilets.
• 
  Toby Fox (right) and Martin Sahlin (left).
• 
  Toby Fox in swim trunks covered in a large amount of foam.
• 
  Toby Fox (third from left) at a game director meeting with Kazutaka Kodaka, Hideki Kamiya, Masahiro Sakurai, Yoko Taro, Jiro Ishii, and Keiichiro Toyama.
• 
  Toby Fox (left) and Nobuo Uematsu (right).

Trivia

• On 2023's April Fools' Day, Toby Fox "accidentally" sent a picture of himself covered in a large amount of foam to some of the "TRUCK FREAK" subscribers to the Undertale/Deltarune newsletter. People subscribed to the "Foam Shower" tier also received several other images, with the previous image of Toby photoshopped into them.
• Toby Fox has visited this wiki's Dog Residue article and commented on a piece of misinformation on the Papyrus article claiming that the character was inspired by Octopimp.
• Toby has vaguely mentioned this wiki in regards to him fixing glitches for the game, as he had assumed no one would be able to read a wiki page for the glitch.
• Toby Fox and Temmie Chang animated a commercial for Kenny Omega when he had a wrestling match in Japan. The commercial uses music used in Undertale and is stylised as Undertale's gameplay.
• Toby Fox is embarrassed by EarthBound: Halloween Hack in the present day, dubbing it a "bad ROM hack with swears".
• Toby Fox made music for Temmie's thesis film.

External links

• toby.fangamer.com
• toby.fangamer.com/comics/
• toby.fangamer.com/interviews/
• tobyfox.net (old, archived)
• tobyfox.net's music (old, archived)
• Old YouTube channel (@FwugRadiation)