Sorry if I'm opening up an already discussed subject, but I used the search feature and haven't found anything. But in case I'm wrong, mea culpa.
So far I noticed there seems to be a lot of "celebrities" in Gantz that's not really discussed here.
Anjolina Jolie, we all know of.
What about the sniper, Togo? He seems to be Golgo-13. In the same mission there is a puffy, frizzy haired guy. (Buddha mission). I assume that is the Japanese actor, from the movie "Go" and also the guy that played the smart kid in the live action version of GTO. Konozuka Yosuke? Can't remember the name.
Muscle Rider looks like a Tekken character. Of course, even the aliens are spoofs of Japanese pop culture, like the Tanaka alien.
Anyone else notice any hidden celebrities in Gantz?