Ever since the second season of Defender of the Universe, Vehicle Force has been seen as an outlier of the Voltron universe. Back in 1984, the first 52 episodes of Voltron: Defender of the Universe featured a super force of five space explorers who piloted robotic lions that combined to form Voltron. The 53rd episode introduced a 15-member teams, divided into three 5-member teams, which all combined to form a different Voltron. Crucially, although these new episodes were set in the same universe

The Mighty Space Mouse, the 46th episode of Voltron: Defender of the Universe, introduces X-47, a mighty robot for the Space Mice to ride. Defender of the Universe juggled seriousness and humor from episode to episode, but The Mighty Space Mouse might be the best example of balancing both in the same episode. Every scene with the Space Mice would be dramatic if it featured the human characters. An intense boot camp. Mastering a new weapon. Confronting their mortal enemy, Cova the blue cat. Keith