I think you might like MF Doom, he based his name and look on Dr. Doom from the Fantastic Four. His rapping style is pretty cool, it's most really laid back and it's rarely aggressive which makes for nice listening.
For MF Doom (or just simply Doom, as he's called now aka King Geedorah, Viktor Vaughn and a few more), check out these songs under his and Madlib's side project, Madvillian:
All CapsAccordianRaidThe Madvillain album, Madvillainy, is compiled of about 22 short pieces, with three instrumentals (one being called Do Not Fire!, which uses Street Fighter sounds in the music). It's the first
real hip-hop album I listened to all the way through.
As for the other artists, I did have some songs in mind, but I've which they were, so I'll have to listen through them again and post them up here.
If you like those Madvillain songs, I'll give you a link to album to give a go. It might take a little getting used to if you've never really listened to hip-hop before, though.