Played by Bodie Olmos, the son of Edward James Olmos, Hot Dog was one of the pilots trained by Kara Thrace after the events of episode 4, season 1, "Act of Contrition." In that episode, he opts to stay when Starbuck and the rest of the trainees are confronted by a flight of 8 raiders while on a training exercise. While proving futile, and resulting in heavy damage to his viper, this act earns Hot Dog the respect of the rest of the squadron.
Hot Dog remains a consistent, albeit minor character throughout the series, and turns out to be the father of Cally's boy, Nicky, long thought to be sired by Chief Tyrol. This is revealed in "A Disquiet Follows My Soul" in season 4.5.