Roco Bonnaro is a member of Piccaro Calvino's gang. He is involved in organized crime in order to support his blind sister, Stella, and does everything he can to help her regain her sight. Roco sees Spike effortlessly take out several hijackers on a spaceliner and begs Spike to teach him how to fight. He befriends Spike although he doesn't tell him about the bounty on his head. Everything goes awry when Roco gives Spike a package to hold onto, which contains a plant called "Grey Ash" that he stole from Calvino. This plant, worth millions upon millions of woolongs, is capable of curing "Venus Sickness", the disease which has blinded Stella. Roco has a rendezvous with Spike and they fight against Calvino's gang. Roco manages to pull off one of Spike's Jeet Kune Do maneuvers and topples one of the gangsters, but, in the chaos, Roco is gunned down. He asks Spike if they would have been friends if they had met sooner, and dies. Later, Spike pays his respects and visits Stella, although she can feel that Roco has died.