Nickname given to Castiel an Angel of the Lord, by Dean Humanity Winchester. A nickname given to a typically awkward and reserved person who is ironically very strong and serious.
Can be used as a nickname for a buddy, that deep down you want to be your fuck buddy.
"Team Free Will: one ex-blood junkie, one dropout with six bucks to his name, and Mr. Comatose over here."
adj 1: relating to or associated with a coma; "comatose breathing"; "comatose state"
2: in a state of deep and usually prolonged unconsciousness; unable to respond to external stimuli; "a comatose patient"