Memoryhead
Come join the fun.
Memoryhead
Memoryheads (JP: メモリーヘッド) are a group of Amalgamates found within the True Lab in Undertale. Before their spare conditions are met, Memoryheads are known as " " (five blank spaces, except in their initial encounter text: "* drew near!" where six are used, not including the space after * and before drew).
Memoryhead is composed of six faces in an oval, a bone, and a nondescript wisp, which resembles a human brain in shape. Memoryhead's overall shape and distortion resembles Giygas, the final boss of MOTHER 2 / EarthBound.
In the overworld, Memoryhead takes the form of an amorphous, white blob that features two smiling faces along the top and a star-shaped hole with eyes in the center. The smiling faces also make an appearance whenever Memoryhead attacks.
Unlike the other Amalgamates, Memoryheads do not appear to be composed of any known monster seen throughout the game. Its manner of continuously glitching and speaking in errors, the flavor text "Smells like batteries", the fact it talks normally only when using the CELL option, and the dial-up noises it produces may suggest that it lives in or is connected in some way to an electronic device.
The Memoryheads are comprised of multiple people who have seemingly assimilated into one mind and want the protagonist to join them. Upon refusing, the Memoryheads express disappointment but are otherwise satisfied.
Memoryheads are encountered in the True Lab in the room before the red key slot. They reveal themselves to the protagonist after turning on three sinks along the wall and attack.
Memoryhead, along with Reaper Bird and Everyman, does not appear in the True Pacifist Route's epilogue.

- Dots appear on the screen, which soon balloon into wiggling faces. The placement of these dots is random, sometimes even outside of the bullet board. Internally, the heads are referred to as "
freakbullets".
- Memoryhead can be spared by using CELL from the ACT menu, then refusing one of them.
- Using the ITEM menu gives the protagonist a Bad Memory if their inventory is not already full.
- Before using CELL in the ACT menu, Memoryheads "play" dial-up noises as dialogue before attacking. The following text is only used after the CELL action is used.
- Come join the fun. [Neutral]
- It's a real get together [Neutral]
- Lorem ipsum docet [Neutral]
- Become one of us! [Neutral]
- Then, hold still. [Join]
- Just a moment. [Join]
- You'll be with us shortly. [Join]
- That's a shame. [Refuse]
- Oh well. [Refuse]
- Be seeing you. [Refuse]
- No data available. [Check before CELL]
- drew near! [Encounter]
- But nobody came. [Neutral]
- Smells like batteries. [Neutral]
- The enemy put a piece of itself in your inventory. [ITEM]
- But your inventory was full. [Full inventory]
- AT - <protagonist's total AT + 10> DF - <protagonist's total DF + 10> [STAT]
- You take out your CELL PHONE. You can hear voices through the receiver...! [CELL]
- Monster has low HP. [Low HP; unused]
- Seems like it doesn't care anymore. [Spare conditions met]
- Memoryhead's ACT options match the options in the overworld menu.
- The flavor text, "But nobody came." is a recurring line in Undertale. Examples include:
- This line can appear twice in Lemon Bread's encounter, including the Call ACT.
- The text appears as an encounter flavor text when the kill counter for any location is exhausted.
- Flowey states this line twice during his monologues: once as Omega Flowey on the Neutral Route,[2] and at New Home near the end of the Genocide Route.[3]
- The line appears upon attempting to call Toriel if she was killed.
- The flavor text "lorem ipsum docet" comes from Latin, but has no meaning since "lorem" is not a word. However, it does have a few possible origins:
- The term "Lorem ipsum" refers to placeholder text commonly used to demonstrate the visual form of a document or a typeface without relying on meaningful content. However, usually "Lorem ipsum" text begins with "Lorem ipsum dolor sit amet", making "Lorem ipsum docet" an intentional misquotation.
- Alternatively, it could reference the origin of the term, which is the work of the Ancient Roman philosopher Cicero called De finibus bonorum et malorum where the sentence Neque porro quisquam est qui dolorem ipsum quia dolor sit amet (...) was split between two pages and the second page contains "lorem ipsum quia dolor sit amet (...)". Dolorem ipsum means "the pain" or "pain itself", which would make the dialogue mean "He/She/It teaches pain itself".
- Memoryhead appears briefly in the inaccessible room "
room_monsteralign_test".