Build the ultimate battlefield with Transformers War for Cybertron Siege figures. Siege plunges fans into the epic fight to survive on the final day of the Autobot and Decepticon battle to control Cybertron. The Decepticon resistance army and the Autobot counter-resistance fighters gear up with the universe's most advanced modular weaponry, including weapon mode Battle Masters -- sentient bots that convert into weapons. Battle Masters figures convert from robot modes to weapon modes in a few easy steps. Use the weapon mode to equip other Siege figures (sold separately) with larger mission load outs and use the included Fire Blasts to simulate blaster fire coming from the weapon mode of Battle Masters or other Siege weapon accessories (not included).