First name of Batman's alter ego (5)
I believe the answer is:
bruce
'first name of batman's alter ego' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for bruce that I've seen before include "Robert the -; Lenny -" , "Allied group of countries" , "Robert the -, Scots king" , "Scottish boy's name" , "-- Forsyth; -- Willis" .)