Personally, I think the heat vision, fire breathing, and invisibility are a bit too much for a zombie. The idea is okay but its lacking a lot of details. It just seems like this wouldn't last very long. I'm not trying to hate on your idea, I'm just giving some constructive criticism. A good idea for a zombie rp, which I haven't really seen a lot of yet, would be something like the game DayZ, where you start out with no weapons or equipment and you have to maintain health levels such as blood, water, and hunger. Night would be pitch black, so you would have to find light sources, but they would attract zombies. Also, you could either band together with other characters or fight them in hopes of killing them and taking their gear. I think that would be an awesome idea for a zombie rp and I haven't really seen anyone try it yet.