I saw this character in a Batman comic in either late 80's/early 90's. The character is a child or teenage crime boss who fancies himself a general/strategist; early in the comic Batman tries to "save him from thugs" only for the brat to hit him with a hammer when his (Batman's) back is turned.
Later, thinking he killed Batman, the crime boss addresses his goons and tells them Batman is dead (he's wrong of course, but doesn't know that yet) then interrogates two of Black Mask's men (who are both dressed up as clowns for some reason) and executes one for talking back at him.