"Frozen” character (4)
I believe the answer is:
olaf
'frozen character' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for olaf that I've seen before include "Name of five kings of Norway" , "St ---, Norwegian king" , "Name of five Norwegian kings" , "King --, cantata by Elgar" , "King and patron saint of Norway" .)