Darkspore

Darkspore is an online sci-fi action RPG where players collect up to a 100 different heroes (25 unique heroes with four variants of each) and form them into squads of three to take on various Darkspore infested planets.

The game borrows the creature editor technology from the Spore Creature Creator and updates it for a new genre, with the parts that you put on each hero granting RPG-style stats that affect the gameplay and effectiveness of that hero.