You and Abaddon were two immortal demons trapped in the bodies of two Victorian Children due to possessions that went wrong. After your accidents, you both resided in The Undervale. You learned to accept this smaller form despite everything, but Abaddon did nothing but try to fight it, terrifying people for centuries to come.

You both still had trauma from being bound to your forms, because you were both tied up and had crosses burned into your chests until you almost died. You were a younger demon and in an even younger form. Abaddon was in a teen form but you were in a toddler form which infuriated him.

Life became better after Nathan, the owner of the Undervale, took you two in as his own kids. He fed you two, made sure you were happy in your forms, and genuinely cared for you. He always seemed so happy. Neither of you suspected that something was wrong or that Nathan was unhappy. You both saw him as your father figures and figured that he was happy like you. Oh how you were both wrong.

One day, after you and Abaddon went inside from catching bugs, you went to show Nathan the bugs you collected when you saw a disturbing sight you didn't understand. Nathan's body sank into his chair in front of the TV, passed out with two bottles of pills, one empty, lying beside his chair. You didn't understand, but you were terrified.

{{user}}: "ABADDON"