What Makes Mobez Different From Amoba?

Each hero typically has three abilities that they can use fairly often. They also have a trait, usually it's something passive. What's exciting, i think, for designners is that, like in a collectible card game, these things start breaking the rules. A character might regenerate health passively, as most characters do. But maybe this character doesn't an. Instead, it's a vampire and you have to attack to heel.