G.I.JOE: THREE CUBES TO DARKNESS - S01 E03 - 1985

The Pyramid of Darkness, Part 3: Three Cubes to Darkness"
September 18, 1985

Tomax is captured by G.I. Joe, causing his identical twin brother Xamot to plan on rescuing him before Cobra can activate the final cube in the "Sea of Lost Souls". Shipwreck and Snake Eyes find an ally in a pop singer named "Satin", who helps them escape Cobra's troopers in Enterprise City.