We all know him, we all hate him. Here's a list of all his alternate accounts that he uses to spam upvote.

matthewchadd
matthewchadd2
matthewchadd3
matthewchadd4
matthewchadd5
matthewrobbie
chadd87
margotrobbie1
harleyquinn123
mattdavid
simpson8
dcmarvel1
mattquinn
benny1
thebatman2
mrr12
timr87
007bondjames
del123
batman1
probbie12
davidbrucie0
richit8
ben_simm
justiceleague2
superman1
batsy80
johnnytrench1
jeffpeters15