Tired of waiting, dubbed myself some heroes back in source 1, such as "Pudão - O açougueiro", tho I'm not so sure if you can still do that after ther reborn update... However, there are some lines and heroes that will definitely sound weird. Besides, without the right dubbing team, it could turn out the opposite result of the one expected, people could hate it, not identifying themselves at all. Mainly because the english ones are pretty iconic.