HIS OVERALL IMPRESSION IS YOU'RE NOT THAT BIG A DEAL. He's yet to see anything that's really impressed him, though a lot of it does make him curious, which means he'll at least be interested enough to stick around and watch. Most recently the Kor were kind of fascinating in that they seemed to really confirm the parallel with Mazoku, except to Xellos they seemed weak and unsubtle (but he believes that to be true about a lot of things including other Mazoku).

I wouldn't say he likes Ayanami very much. Well, not that he dislikes him either. He basically respects Ayanami's space only because at the moment starting a conflict with him would interrupt his observations. The people from your world are all curiosities though.

I FEEL LIKE THERE'S PROBABLY MORE... but it's been a while. orz Xellos.