Main Characters
Kris - Susie
Ralsei - Lancer
Noelle - Snowy
Holiday family - Drake family
Rudolph - Snowy's father (Daddy Drake)
Carol - Crystal
Dess - Chilly
Berdly - Alvin
Jockington - Catti
Egg Man behind the Tree - The Strange Someone
Returning characters from Undertale retain their Underswap swaps.
Card Kingdom - TV World
King - Tenna
C. Round - Suilver Sam
K. Round - Goulden Sam
K. Round's Crown - Goulden Son
Clover - Mike
Clover's heads - Fake Mikes
Clover's body - Real Mike
Rouxls Kaard - Ramb
Jevil - ERAM
Seam - FRIEND
Mr. Society - Lanino
Mr. Elegance - Elnina
Rudinn - Shadowguy (Hat On)
Rudinn Ranger - Shadowguy (w/ Ears)
Hathy - Pippins
Head Hathy - Green Pippins
Jigsawry - Shuttah
Ponman - Zapper
Rabbick - Ribbick
Bloxer - Watercooler
Cyber World - Sanctuaries
Queen - Knight
Giga Queen - Titan
Werewerewire - Titan Spawn
Sweet Cap'n Cakes - 8-Bit Rudinn Gang
Sweet - Orange 8-Bit Rudinn (Bottom-R)
Cap'n - Blue 8-Bit Rudinn (Top-R)
K_K - Pink 8-Bit Rudinn (Middle-R)
Spamton - Old Man Gerson Boom
Spamton NEO - Hammer of Justice
Hacker - Fire Extinguisher
Addison - Philosopher
Yellow - Organikk
Plugboy - Eucharist NPC
Werewire - Balthizard
Tasque - Mizzle
Tasque Manager - Miss Mizzle
Virovirokun - Guei
Ambyu-Lance - Wicabel
Poppup - Bibliox
Maus - Cuptain
Mauswheel - Stack of Cuptains
Swatchling - Dancing Jack O' Lantern
Swatch - Jackenstein
Pipis - Winglade