Wonn Ionstrike was a human male crime boss and gangster who operated on Cloud City on Bespin. Ionstrike possessed cybernetic attachments on his torso and arms, and moved around in a hovering device. He was protected by a team of bodyguards, among them Tarnono.
The children Moxxin, Traff, and Vanraya managed to pickpocket the Cantonarive crown coin from Baron Administrator Lando Calrissian, intending to give it to Ionstrike in return for a reward. Calrissian, chasing the thieves down via security droid, told them that he was supposed to give the coin to a grand slicer as part of a deal to protect Cloud City from the Galactic Empire, convincing the children to change their minds about giving the coin to Ionstrike.