Rascal with strong accent needs no introduction (5)
I believe the answer is:
rogue
'rascal' is the definition.
(both can mean a scoundrel)
'accent needs no introduction' is the wordplay.
'accent' becomes 'brogue' (brogue can mean a Scottish or Irish accent).
'needs no introduction' means to remove the first letter.
'brogue' with its initial letter taken away is 'ROGUE'.
'with strong' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for rogue that I've seen before include "Diverging from type" , "A dishonest or unprincipled person" , "Villain - freak" , "Wild animal driven away from herd" , "Deceitful and unreliable scoundrel" .)