The Defender Spaceship flies trough the space, rescuing innocent, helpless people, the Astronauts, from alien invaders like the Manti Landers and UFOs. It's armed with a laser beam, and three powerful Smart Bombs.
The Defender Spaceship is first seen on The Defender game fighting the Manti Landers. Its lasers were seen hitting a UFO, and then a pair of Manti Landers. Throughout this part of the level it can be seen flying around and blasting more Manti Landers. It was later seen getting hit by a shot from a Manti Lander, causing it to break apart (therefore losing a life) and trap a Spaceman in the fire from the result, but it respawns as is seen later on the background. At the end of the Defender stage, when Batman, Gandalf, and Wyldstyle from shielding themselves from being blasted by the UFO that held a gold token (the foundation element of this dimension), the spaceship appears and fires at the UFO until it successfully hits its target, releasing the foundation element and saving the heroes.
The Spaceship is seen on his world flying past an Astronaut watering his flowers when a UFO appears and begins to chase it, but is saved by the heroes using a hijacked Manti Lander to blast the UFO. Batman ask for its help in the fight against Lord Vortech. It does an areal backflip, which Wyldstyle guessed was space-ship for "how can I help you?" and follows them. It was later seen on Vorton with the others.
During the fight on the rift loop it is the 2nd being summoned by the trio to help them to distract Vortech by shooting him with its laser beams. When the fight continues on Foundation Prime, the Spaceship is summoned again via a satellite to help the heroes break the foundation baseplate by shooting the bottom right side, causing it to break apart. It was seen being chased afterwards by a group of 3 Manti Landers.
When the temple starts collapsing the Spaceship arrives to rescue the trio again and help them escape, but it wass knocked down by a punch from a gigantic Lord Vortech. Its unknown if it escape from Foundation Prime since it isn't on Vorton.
In Retro Wreckage, the Spaceship comes to life as one of several arcade game characters that were possesed by Lord Vortech's evil force. When the Gamer Kid enters the room it was in, it was flying in an area that was blocked by a gold gas tank. Once the tank was cleared out, the Spaceship moved to the center of the room and started to fire lasers at the Gamer Kid, but he manage to defeat the Spaceship by driving up a ramp into it (forcing it to land and return to its game), and return the game to normal by playing it.
The Spaceship was summoned along with an arcade grid of Defender by the Phase keystone to help fight against King Kong. Once the Spaceship is charged up by reflecting the sentry turrert's laser at the grid's satellite dish, it will fly up and fire at the TNT crate from B.A. Baracus, causing it to explode and force King Kong back long enough for Batman to shut the window.
- It's possible that the spaceship could be controlled by Gamer Kid or one of the Astronauts.
- It can be played on the Arcade Machine dock games of Defender and Defender II in Retro Wreckage.