I love the concept of your Zombie Graspers!
I also love your Blasting Off Again power for Meowth, but rolling 3 defense dice means that 8 out of 9 times Meowth will avoid taking any damage. If Meowth gets height advantage (which it will with Blasting Off Again), it has a 15 out of 16 chance (4 defense dice) of avoiding damage. It could take forever to take it down. Still, it's thematic and looks like a lot of fun to play.
Have you playtested Meowth yet?