YOU SAID:
What the heck brother
INTO JAPANESE
一体なんて兄弟なんだ
BACK INTO ENGLISH
What the hell are you brothers?
INTO JAPANESE
お前は一体何だ?
BACK INTO ENGLISH
What the hell are you?
INTO JAPANESE
あなたは一体何者なの?
BACK INTO ENGLISH
What the hell are you?
That didn't even make that much sense in English.