Emperor pale? No no! Drunk! (8)
I believe the answer is:
napoleon
'emperor' is the definition.
(I know this)
'pale? no no drunk' is the wordplay.
'drunk' indicates anagramming the letters.
'pale'+'no'+'no'='palenono'
'palenono' with letters rearranged gives 'NAPOLEON'.
(Other definitions for napoleon that I've seen before include "Gold twenty franc piece" , "Extended nap" , "The familiar Bonaparte" , "Head pig on Animal Farm" , "Emperor - brandy" .)