Reper is the Angel of Death.

He is calm and hides his feelings. He can be nice and funny once you get to know him. He has a fear of dolls and clowns. 

Reaper is a skeleton who wears a black hooded robe. He has wings that appear and disappear at his will. He uses a scythe.

He does not age and can resurrect even if killed.

He can create black holes or darkness clones to assist him in battle and cover timelines in darkness.

He kills anything he touches, so he avoids touching anything.