Assemble your favorite heroes, establish your army, collect cool characters and build whole worlds populated by Micro Action Figures by Mega Bloks! Every mystery pack is a fun surprise that�s an exciting way to get new micro action figures into your Mega Bloks collections. Inside each pack is a completely random micro action figure for you to enjoy with new themes, outfits and even weapons that you can�t find anywhere else. Some brands like Halo have common to ultra rare characters that will add a whole new level of collectability to your sets and make you the envy of all your friends!