Disney character, a pig-headed fuddled lout? (5)
I believe the answer is:
pluto
'disney character' is the definition.
(I've seen this in another clue)
'a pig-headed fuddled lout?' is the wordplay.
'a pig-headed' becomes 'p' (start (head) of the word pig).
'fuddled' is an anagram indicator.
'lout' is an anagram of 'luto'.
'p'+'luto'='PLUTO'
(Other definitions for pluto that I've seen before include "Roman god" , "Infernal ruler" , "Solar system body" , "cartoon character" , "Dwarf planet" .)