Establish your army, build and expand your units with the Halo Hero Pack Series 4 from Mega Bloks! Each Hero Pack contains a fully armed micro-action figure ready to jump into the fight! With 8 Halo Hero sets to collect, part of the adventure is finding out which hero has joined your Human-Covenant War! From common to ultra rare micro-action figures, a surprise Halo character is found in every Hero Pack! Collect them all and have awesome Halo Heroes lead your forces to victory!