- "I...killed a guy."
- ―Rhint Celonius[src]
Celonius came to know Alisa in the 2060s after she left Jet Black and dated her. He was very protective of her and, when she took out a loan from a loan shark, Law Rentzuo, he knew it might be trouble.
In 2071, Rentzuo and his men assaulted her to repay. Celonius charged them, killed Rentzuo and ran away with Alisa. This incurred a 1.8 million bounty on his head. Back at Alisa's bar, Celonius waited and, with Alisa, planned their next move. Not only the fact that he killed someone, but that he has a bounty on his head weighed on him heavily. Jet visited the bar and, when it was clear Alisa knew him, he left them alone. When he came back after Jet left, he learned that Jet was a bounty hunter and thought their lives were then over. Alisa assured him it wasn't his fault, and encouraged him to leave with her. They took a boat to drive to a different town, however, Spike Spiegel had been looking for him, and chased the two for awhile. Then, Jet took over the chase, and eventually the boat lost its engine. Celonius was injured, but, this time, Alisa took the gun and defended him against Jet. When it was clear Alisa couldn't shoot him, Celonius started to run, only to be caught by Jet and encouraged to be strong in order to protect Alisa. Jet turned him in to the Ganymede Police Department.