Sedyn Kyne was a male Human Mandalorian during the Cold War on Nal Hutta. Kyne worked alongside Tarro Blood, a noted mercenary who intended to challenge the Great Hunt, despite a prior failed attempt. Sedyn Kyne accompanied Tarro Blood when the mercenary confronted both Braden and Jory in the Poison Pit, a cantina in the town of Jiguuna. On Blood's order, Kyne executed both men in the hope that their deaths will cause the bounty hunter enemy of Tarro to withdraw from the Great Hunt. Later, Kyne encountered himself the Hunter on Nar Shaddaa and tried to kill him, but the Hunter shot Kyne dead, gaining a part of his revenge.