You can read about Obi-Wan's star cards and his abilities in more detail on the Star Wars Battlefront website. Obi-Wan Kenobi's special moves are All-Out Push, which you can charge up for bigger spread Defensive Rush, where he runs forward and damages enemies in front of him, a bit like Luke Skywalker and Restrictive Mind Trick, where Kenobi disables the abilities of all enemies in front of him (within range), which sounds useful. Actually, compare it to Star Wars Battlefront 2 and the game looks better! That whole sequence from the film looks ropy now, because of the aging CGI. That was also quite exciting - we hadn't seen him fight before. It's also where Count Dooku chops Anakin's hand off (planting a seed of inspiration for later life) and old bogey-face Yoda wades in, jumping and spinning an awful lot. That was really exciting at the time - we hadn't seen Jedi fight in those numbers before. Geonosis is the planet where the battle takes place at the end of Star Wars Episode 2: Attack of the Clones, the one with loads of Jedi in it.
Here's a first proper look at Obi-Wan Kenobi and the planet of Geonosis ahead of their arrival in Star Wars Battlefront 2 next Wednesday, 28th November.