It can for sure. There are a lot of dimesions to bipolar mania. There can be psychosis involved which can manifest in many ways.

What is he paranoid about?

Examples from my experience included: hearing things that weren't there, seeing things that weren't there, thinking I could here conversations goin on in other rooms, thinking I had extraordinary sight. thinking oncoming highway traffic was in my lane, thinking shodows made by street signs were holes in the road. thinking everyone was against me/ out to get me. thinking the men in white suits were going to come and haul me off to the asylum.