KAPOW!

From BoardGameGeek:

Superhero - or supervillain? You decide in this buildable dice game. Your customizable dice pool is used to execute a variety of superpowers. Gain special abilities and new play experiences by taking on the role of six different heroes or villains. In KAPOW!, players go head-to-head in a classic explosive clash of good vs. evil. You choose to be a villain or hero, which determines your starting trait dice and unique abilities. You can gain additional blank "action dice" that have removable faces that that you customize to your liking to best enhance your character. Behind a player screen, you roll dice, then allocate them to attack, defense, and power-up abilities. The combination of choosing how to grow your dice pool, how to customize your action die faces, and how to use each roll leads to a satisfying, strategic showdown. With two copies of the game and the duo board/Sawmill Jackson expansion, you can play with three or four players in games with a a 2v2 (2 heroes vs. 2 villains) or 2v1 (2 heroes vs. 1 mega-villain) format!