Aden Corso was the leader of the dangerous prisoners on the prison ship Sebrus who overpowered its crew and guardians and killed most of them. The Sebrus crashed on P2X-005 in 2000 and they were stranded for three years. They fought the rest of the surviving crew including Captain Warrick Finn.
When SG-1 arrived in 2003, they agreed to help them power the Sebrus. When SG-1 discovered that they were escaped prisoners, they responded by taking Jonas Quinn hostage, ultimately forcing Jonas to help them escape, only to realize too late that Jonas had tricked them as the address they had gone through turned out to be the SGC address and as such, Aden and his two colleagues, Tanis Reynard and Lyle Pender were captured and imprisoned before they were transported back to prison with the ship now fully repaired. (SG1: "Forsaken")