Cartoon bear or baseball great Berra (4)
I believe the answer is:
yogi
I believe this is a double definition.
'cartoon bear' is the first definition.
(I've seen this before)
'baseball great berra' is the second definition.
(I've seen this in another clue)
(Other definitions for yogi that I've seen before include "someone with ascetic behaviour" , "Practitioner of yoga" , "Cartoon bear; Hindu ascetic" , "Hindu expert in spiritual discipline" , "Hindu mystic" .)