Round and Round, Pt 1 (S03E21)

Sweet Polly is on the scene reporting a space launch when the capsule veers off course and lands on an unknown planet. The villainous Zorb has used a magnet to redirect the capsule to his domain. He reveals to his sidekick, Cron, that he intends to use the capsule as bait to capture Underdog. Once the capsule touches down, it gets stuck in the mud. A distress call goes out to Underdog for help. After he successfully frees the ship, Cron approaches him with a charm, presenting it as a token of friendship. Underdog, misreading the situation, suggests bringing Cron back to Earth.