Rai
Zelgadis doesn't even know this guys name, so he calls him "Ramen Guy" in his head. Because that seems to be the focal point of this dude's existence.
Rai confuses the hell out of him. He seems so confident and assured and yet the things he says are strange at best. It's like he tries to fluster people, which would be annoying to Zelgadis if it didn't seem so -- natural. He's a little interested to talk to this guy more and pick his brain, just out of morbid curiosity for what the hell is going on in there.