Pleasant information I presented to US gangster? (6)
I believe the answer is:
genial
'pleasant' is the definition.
(thesaurus)
'information i presented to us gangster?' is the wordplay.
'information' becomes 'gen' (gen is a kind of information).
'presented to' means one lot of letters go next to another.
'us gangster?' becomes 'al' (Al Capone).
'gen'+'i'+'al'='GENIAL'
(Other definitions for genial that I've seen before include "Angel I found being affable" , "Cheerful and easy-going" , "Cheerful, affable" , "Friendly and agreeable" , "Cheerfully extrovert" .)