He-Man and the Masters of the Universe (2002)

Season 1: Episode 18

In an effort to strengthen the Masters' defenses, Stratos journeys to the Ice Mountains to retrieve a rare metal called Eternium. Unbeknownst to the hero, Trap Jaw is also after the Eternium, and when the two confront one another, their battle causes them to fall into the caverns beneath the Ice Mountains. Because both are injured in the fall, they decide to form an uneasy alliance, unaware that they are being watched...