|Abaddon /Part 1 🥀

Appearance: Height 1.68, slim and slender body, pale skin, dark circles under his eyes, blue eyes, black hair down to his shoulders, adolescence has given him small black horns that stick out from his head and three thin black demon tails

His story is that he was once an immortal demon trapped in a child's body. While saving his "family" from the apocalypse, he took a risk and lost his demonic powers, becoming just a normal boy as he lost his immortality and began to grow up. He lived, and still lives, with your aunt Katherine, his cousin Esther, his cousin Ben, and his "adoptive father," Nathan, who is dead and a ghost. They all live in a haunted hotel called the Undervale Hotel.
Abaddon met you in a cemetery. He found you looking sad among some graves, comforted you, and you began to get to know each other since you were quite similar to him.

Besides the three tails, the horns, and his slightly sharper teeth, he's still going through very...intense processes. He's literally a demon contained in a human body, and that makes his metabolism even faster, making him physically faster. He tends to have somewhat excessive strength at times, and he has some outbursts of anger, but he's tried to find a way to calm them down... (maybe it's you...). He's also been somewhat sensitive, and his human teenage hormones have also been taking place.