Acrion Chrysanthius was a male Mandalorian member of the Black Sun. Originally a sergeant of the Mandalorian Secret Service, an elite security organization on Mandalore, Chrysanthius became corrupt, falling in with Prime Minister Almec's conspirators. He led a group of Secret Service agents as they aided the Death Watch, though ultimately lost. Not deterred, Chrysanthius joined the Shadow Collective, a criminal faction led by Darth Maul that aimed to take over Mandalore. While part of it, he made contacts among the Black Sun members. After the organization failed and fell apart, the Mandalorian commando joined the Black Sun.