Rico was a G.U.N. trooper and member of Paladin Team Sigma-Alpha 2. He and the rest of the team were responsible for the capture of Sonic the Hedgehog who had been framed for the theft of a Chaos Emerald that had actually been stolen by Shadow the Hedgehog, although Sonic escaped their custody while flying in a helicopter. He would later meet Sonic again as an ally during their mission to defeat the evil Dragon, Zan. He and his teammates were ultimately captured, brainwashed and made into a member of the Eurish Dark Egg Legion.
Rico was part of one of the first missions given to Paladin Team Sigma-Alpha 2; the capture of Sonic the Hedgehog, when they believed he was responsible for stealing the city's Chaos Emerald. They ambushed him on his return to Knothole, and despite him managing to snatch their weapons, managed to capture him. Things went well until Sonic spotted a loose screw on the helicopter he was being transported in and jumped out after taking out everyone aboard. (StH: #98)
Zan & the Xorda
Some time later, Rico and Paladin Team Sigma-Alpha 2 were once again deployed, this time to work with Sonic and the Knothole Freedom Fighters in bringing an end to the terror brought on by the dragon Zan. Spike told Rico he heard a noise, but before he could respond, both he and Spike was captured by Zan. They later rejoined their team after Zan was killed. (StH: #107)
Encounters with Eggman
Eventually, Rico and the rest of Paladin Team Sigma-Alpha 2 were captured by Dr. Eggman along with former Commander-in-Chief of G.U.N., Hugo Brass. The team was Legionized and brainwashed into serving the Eggman Empire as well as Hugo Brass, the new Dark Egg Legion Grandmaster of their Eurish chapter. (SU: #38)
After being Legionized, Rico had strength, speed, and agility many times greater then he previously had. He also has wrist-mounted blasters for long-range combat and wrist-mounted energy blades for close-combat. (SU: #38)