It's Caesar. Although naming the leader of a slave uprising after Caesar is rather questionable in and of itself, "Ceaser" would be the one who stops the uprising.
You know, I'm starting to think that the people who make these movies are kind of like Americans (or American film studios, anyway) with Godzilla: they just don't get it. Every Planet of the Apes movie was worse than the previous one (save for Battle, which was half-decent). It was a good system, a reliable system, one that pushed itself ever closer to the great dream of "not having to make any more Planet of the Apes movies". Tim Burton understood that.
But these folks... They're making new Planet of the Apes movies that don't suck. Something is wrong with this picture.