Eliz!Papyrus

Papyrus was Elizabeth's sibling, before he was essentially "murdered" by being mutilated by experimentation by Gaster.

Appearance
He is the normal Papyrus, but instead of his arms, lower torso and legs are replaced with Gaster Blasters, one acting as a 'jetpack'. He also has an orange eye.

Backstory
He was created 5 minutes after Elizabeth. He was experimented on, effectively being "killed".

Ability
He can use his Gaster Blaster arms to attack.

Elizabeth
She was his sister, and he loved her.

UT Sans
He saw him somehow during his death.

Eliz!Gaster
His memories of them were erased.

Trivia

 * I (underfreshfan) have no idea what was going through my head for this character.
 * He can't talk.
 * He is the only character who is dead but still walking.