One of a comical pair
(Other definitions for stan that I've seen before include "Laurel perhaps" , "Laurel and Hardy, . . . . and Ollie" , "One of the comic duo" , "- Getz, jazz musician" , "Eminem hit; man's name" .)
'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" , "Fellow" , "jump on board" , "Hardy" .)