Ketsu Onyo

Ketsu Onyo is a character who appears in the Star Wars Rebels episode "Blood Sisters". She is a Mandalorian bounty hunter and an old friend/partner of Sabine Wren.

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Before Sabine joined the Rebellion, she and Ketsu apparently attended the Mandalorian Imperial Academy together until they escaped. They were close friends, considering each other sisters, and had plans to become bounty hunters to join the Black Sun, and for an unknown period of time they worked as freelance bounty hunters. However, at some point, Ketsu abandoned Sabine to save herself, and eventually succeeded in joining Black Sun.