Skeleton King is the 14th episode of the series, the last episode of Season 1, and part 2 of the season finale.
Plot
With only Gibson and a half-damaged Super Robot, Chiro must mount a rescue against the Citadel of Bone to save the Hyperforce from tortuous brainwashing by Mandarin and Sakko. As Chiro and Gibson expore the citadel's nightmarish interior, they discover secrets of Chiro's past, as well as a secret of Skeleton King himself.