Bio: In his maturity, the Wookie Chak was captain of the Grinning Liar during the Legacy era. On that ship, he has human female co-pilot, Kee, with whom he runs principally smuggling operations.
His first appearance in comics was not, however, in the pages of Legacy, but in the last issues of Republic. He's lived long enough to have witnessed the enslavement of his people in the Clone Wars--and to still be pissed off about it.
In those early days, he was in the service of Vilmarh Grahrk. It is unclear whether the nature of that relationship was that of a Wookie serving a life-debt (like Chewbacca) or something less formal. He refers to Villie as "uncle", though, suggesting a relationship grounded in friendship more than debt.
He was directly responsible for saving Quinlan Vos from being executed on Kashyyk pursuant to Order 66.
Notes: As of 2006, he's the only character to be in both Star Wars: Republic and Star Wars: Legacy—series that are separated by about 150 years. Save the ghostly reappearance of Yoda or Anakin SKywalker, it's likely he will retain this distinction.
#0 - 'Welcome to the Future...' #0½ #14 - 'Claws Of The Dragon, Part 1' #16 - 'Claws of the Dragon, Part 3' #17 - 'Claws of the Dragon, Part 4' #18 - 'Claws of the Dragon, Part 5' #19 - 'Claws of the Dragon, Part 6' #23 - 'Loyalties'