Deceased's favorite thing to do is put evil curses on Psymonsters. He just loves it when any Psymonster wakes up with something gooey in the bed, disastrously trips down the stairs, has a peel on which any Psymonster slips, has a thorn on the side, suddenly finds the hands tied together, or has the glass cup always fall on the floor and break into pieces. But Deceased doesn't really mean any harm, and he would be surprisingly flabbergasted if he ever found out that some Psymonsters thought that he was being extremely vituperative and obnoxious to them. As far as he knows, putting curses on Psymonsters is just what Deceased is supposed to do.
He is a black coffin monster with a gold head, arms, and feet, a yellow eye, sharp fangs, and a maroon mouth with a red tongue.
- The name "Deceased" means a person who has died.
- Despite his name, he is able to move.
- Deceased is one of the six Psymonsters who have elliptical eyes (the other five are Dragonster, Snakegrowth, Hideous, Candyip, and Barbeetle).
- Deceased is the only Psymonster with one elliptical eye.