K2SO

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K2SO is the strongest 601st Separatist Droid in the 601st Group Of The Separatist Droid Army and is the leader of the 601st Group. It actually has a preference to Hoth. Loves: Probe Tri Droid, Octuptarra Tri Droid, Viceroy Nute Gunray, Hoth. Hates: 601st Legion, Cassian Andor, Jedi, Luke Skywalker. It made its first appearance in Episode 6 - Rogue One.

Commander Sashay

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Commander Sashay is the leader and clone commander of the 601st Legion, and he is led by Jedi General Cassian Andor. He first appeared in Episode 6 - Rogue One.