Joker's son play with a knife

Here we go! This is my little bro and his new cosplay of the Joker [Heath Ledger version] (ok, there is just the makeup, but he'll buy the other items soon ).
So in this moment, his cosplay is the Joker's son .

Joker's son: my little bro'
Joker makeup: I did it nyahaahaha!