In my opinion, low-down character of Shakespeare's work (6)
I believe the answer is:
imogen
'character of shakespeare's work' is the definition.
The definition suggests a singular noun which matches the answer.
'in my opinion low-down' is the wordplay.
'in my opinion' becomes 'imo' (common abbreviation).
'low down' becomes 'gen' (both can mean information).
'imo'+'gen'='IMOGEN'
Can you help me to learn more?
(Other definitions for imogen that I've seen before include "Female name" , "Female character in Cymbeline" , "Daughter of Cymbeline in Shakespeare's play" , "Shakespearean king's daughter" , "Princess in "Cymbeline"" .)