|“||No... This is impossible... I am the Grim Reaper, Master of the Forces of Life and Death!!!||„|
|~ Grim, after losing to both Billy and Mandy.|
|“||You keep away from those kids! If anyone is going to have their heads, it's going to be me!||„|
|~ Grim defending Billy and Mandy.|
Like many cartoon references of the Grim Reaper, he is basically a skeleton aided by a black cloak and scythe. Grim speaks with a Jamaican/Caribbean accent. Like the actual Grim Reaper, Grim's scythe helps him with taking souls and then escorting them to the afterlife to be judged, though in the show, the scythe provides Grim with many magical powers and abilities.
In middle school, Grim has been great scarer among all of his classmates even his old enemy, Boogey (also known as the Boogeyman) until he was humiliated by Boogey from the nuclear wedgie and everyone at school called Grim as "Wedgie Shakespeare". In his graduation, Boogey was banished into the underworld.
He was first seen in the show when Billy's hamster died. Billy and Mandy made a bet with Grim in a limbo contest: If they won Grim would have to be their friend for eternity, but if Grim won he could take the hamster's soul. Grim lost the contest, and has been stuck with Billy and Mandy ever since.
He has served as a villain in many episodes of the show, usually being stopped by Mandy or other characters. Being death, he enjoys his job greatly and seeing mortals in pain in general. He has stated that he would like for Billy and Mandy to be killed off, but has never tried to do it directly, though on occasions he will simply choose not to protect or rescue them. Later in the series, he developed a soft spot for the two, and it has been visited several times that he likes being their friend a little bit.