I have an idea. You could post Vivi with his hands stuck out like a kamehamaha wave and blasting fire. I'm not really sure how far you've gotten in final fantasy 9, but it's the part where Vivi is trying to halt the Black Waltz #3's advance and go through the Lindblum Gate on a plane or air craft. Then between the Jedi Knight and Mario, have Cloud on a motorcycle. Again this is just a suggestion I think would work, but it's an opinion. You don't have to follow through with it.
Honestly though, Master Chief would look better on the right hand corner than the counter strike guy since counter strike really hasn't been a hot topic in any part of our conversations. Again I'm not trying to run anything, that's just my synopsis. In other words, since the Jedi Knight is popular in Jedi Knight Academy and Counter Strike is not, you can put a range of things. Heck even any mortal kombat character would look better on there than the random counter strike character.