Colonel Jack Fisk is a fictional male in the Battlestar Galactica series. The character was portrayed on screen by Graham Beckel. His allegiance / loyalty is to The Battlestar Galactica. Colonel Jack Fisk appears for a few episodes during the second series. Fisk is the second in command on board the BattlestarPegasus 2003, eventually becoming the captain when Admiral Helena Cain is killed by the Pegasus' Number Six prisoner. Capt. Lee Adama ( Apollo ) assumes command of the Pegasus when Fisk is killed.
Jack accidentally reveals to Col. Saul Tigh when they're both drunk that Helena had the previous X.O. killed when the X.O. disagreed with Helena's orders. Jack is a Yes man and was willing to do what Helena required. After he said it, he retracted it but by then, it had already been noted by Saul. The incident where the previous Executive Officer (X.O.) is killed is shown in the Razor film when there is a disagreement.
Jack was involved in the black market scam that was going on aboard the Pegasus and which ultimately cost him his life. After Fisk, the Chief Engineer of the craft was promoted to the ships' chief but that didn't last that much and a new leader was sort. Commander William Adama put his son, Lee in charge of the ship.
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