After graduating from the Academy, Corrigan hired on with Hammond Lines as an apprentice Cargomaster. Two years later, he was fired for continual brawling and suspected smuggling. He drifted for several months from one tramp trader to another before he started working for Stefan Markovsky, a syndicate boss on Stavchek's World. Corrigan rose steadily in Markovsky's organization, moving from roving enforcer to Chief Cargomaster on a ship making regular smuggling runs into the Klingon Empire. When Markovsky's gang was broken up by Federation police, Corrigan escaped, killing two Star Fleet officers in the process. He fled to the Orion Worlds and joined Kane's crew about 6 years ago.

Corrigan is a pirate because he likes it. He enjoys violence and mayhem and regards the law-abiding Federation with contempt. He also likes money, or rather, he likes the luxuries that can be obtained with large sums of cash. Among other things, Corrigan wants his own command, but he is com- pletely unable to save the money necessary to fulfill that dream. As a result, he's always looking for that one big break that will make him rich.

Corrigan has a violent temper and tends to use force whenever possible. He is abusive, rude, and combative. Corrigan follows Kane's orders willingly, but he is occasionally irritated by Kane's caution and shows it. When he is enraged, Corrigan's face turns red and his hands automatically ball-up into fists. His voice rarely drops below the level of a dull roar.