Sinbbis was a member of a mercenary group that was led by the Zabrak Dantin Vellos. When the Ithorian Herdship Bazaar traveled to the Cularin system, the mercenary group was hired to travel there and kill Osten Dal'Nay, the leader of the Cularin Militia. Sinbbis accompanied the group and they ambushed Dal'Nay on the planet Cularin. He fled into the Cularin jungle and the mercenaries pursued. They eventually surrounded him next to a stream and attacked him with melee weapons. However, the heroes of Cularin then arrived and they attacked and defeated Sinbbis and the other mercenaries.
- Shadows in Green (First appearance)