Battle droids are extinct and illegal tech. It is said that they were responsible for the apocalypse, and that they turned on their human masters. If this is true, though, Sim is an anomaly. Perhaps it is his mental link with Metal Head that keeps him in line, but he is nothing but a supremely loyal ally, quick to obey his leader’s every command.
Equipped with numerous weapons beyond his incredible strength, speed, and impervious armor, Sim provides his friends the muscle they need to see their way through their toughest conflicts.