One of a comical pair (5)
'one of a comical pair' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ollie that I've seen before include "Stan and --, comedy duo" , "Hardy" , "jump on board" , "Fellow" .)
(Other definitions for stan that I've seen before include "Eminem hit; man's name" , "Laurel perhaps" , "- Laurel, comedian" , "Ollie's partner" , "- Getz, jazz musician" .)