Fetching details from the dictionary...

fellow; guy; chap
thing; object
he; she; him; her
「奴」 has other readings with different meanings.
あいつは本当に信用できない奴だ。
That guy really cannot be trusted.
隣の部屋の奴がまた夜中に騒いでいる。
The guy next door is making noise again in the middle of the night.
この仕事は面倒な奴だと思っていた。
I thought this job was a troublesome one.