The magician is Hamilton the Magical Hypnotist, I just image googled for magician levitation.
Opening Astro's eyes was easy. I just used an erase tool set to 20% opacity, and erased his eyelids so his eyes showed through from beneath.

Nah not really. I used Paintshop Pro. First I took the white colour from his belt shine and drew in the sclera and shiny bit in the middle. Then I got the black from his head and also made a brown colour, then drew in his pupils and irises. But I got them the wrong way around so I had to fix it. Then I ran a mild soften retouch over it so it would look smooth and anti-aliased like the rest of the picture. The brown was too light so I did a few darken RGB retouches on it. That was it. I usually don't try drawing in things like that because they come out badly, but it was such a small area.