He looked imperial in fine robes (4)
I believe the answer is:
nero
'he looked imperial' is the definition.
The definition suggests a singular noun which matches the answer.
'in fine robes' is the wordplay.
'in' indicates a hidden word.
'NERO' is hidden in the letters of 'fine robes'.
Can you help me to learn more?
(Other definitions for nero that I've seen before include "Emperor said to have fiddled as Rome burned" , "Emperor (who fiddled while Rome burned?) d. AD68" , "Roman emperor, d. AD68" , "Roman Emperor, 54-68 AD" , "Roman arsonist and fiddler" .)