Report rewritten about one comic character (7)
I believe the answer is:
pierrot
'comic character' is the definition.
'Pierrot' can be an answer for 'character' (Pierrot is an example). I am not certain of the 'comic' bit.
'report rewritten about one' is the wordplay.
'rewritten' indicates an anagram.
'about' means one lot of letters goes inside another.
'one' becomes 'i' (Roman numeral).
'report' with letters rearranged gives 'perrot'.
'perrot' going around 'i' is 'PIERROT'.
Can you help me to learn more?
(Other definitions for pierrot that I've seen before include "Period; incantation" , "Aged entertainer" , "Clown from French pantomime with white face and costume - tripe or what?" , "French panto clown with whitened face" , "French pantomime character with a white face" .)