Peter Walter IV

Son of Peter Walter III, Peter Walter IV joined the United States Marine Corp in 1955. At age 25 he becomes the commander of the Spacecraft Cosmo.

Universe Prime
In 1962, Commander Walter's ship is struck by a blue matter energy beam from a portal in Earth's atmosphere (created by Rabbit 's core on Earth), and it is destroyed. Walter himself is also struck by the beam.

Commander Cosmo


In the destruction of the Cosmo spacecraft, Commander Walter was briefly assumed dead as a flight engineer named Dwight claimed to have seen the explosion hit Walter in the chest. However, Commander Walter lived to save Dwight from the wreckage and became known as Commander Cosmo. With his new powers, he became a superhero of sorts. Saving earth from various dangers such as sky sharks, spider-demons, and even Doctor Pterodactyl.

After a while, the heroic work takes a tole on his mental state. He begins to realize that no matter how many times he saves earth, he will have to wake back up every day and do it again. In the end, it is futile, as he realizes that he is immortal, and will eventual watch all of them burn at the end of times.

In 1988, Commander Cosmo enters the Achilles Rift and is transported to Universe Omega, where he seals himself inside a dying star to escape this reality of watching the humanity he loves so much face a horrid end. Ironically, his disappearance leaves the Earth (who became dependent on him to protect them) to ruin, which is especially prevelant in the song "Sky Sharks".

Upon sealing himself into the dying star, however, he accidentally creates the Necrostar due to the sheer amount of energy he produces. A year later, both Cosmo and the Necrostar are imprisoned by Jumbo the Time Guardian.

196 years later, in 2185, Ravaxis Starburner sets out to destroy the Necrostar to free the Commander from his prison, as he is needed in stopping the impending doom of The Astronaut and Cosmica. While the explosion caused by Rav does succeed in freeing Commander Cosmo, it also subsequently explodes The Necrostar and sends parts of him floating into deep space. Cosmo then blasts across space to square off against the Alternate Timeline version of himself, The Astronaut. With the help of EarthSpace Militia 10, the Commander kills the Astronaut by separating him and his power source, Cosmica. He takes her far enough away for her power to be just weak enough to kill The Astronaut, and reasons with her. The EarthSpace Militia 10 attacks the Astronaut and kills him.

After The Astronaut is tranquilized, EarthSpace Militia 10 sends a signal to The Commander to confirm that he has taken out the Daughter of Space. He replies saying to not worry about her, they're going to explore deep space. "There's something out here..." he states, before asking a foreboding question; he asks for backup from all heroes to exist in the Steam Powered Giraffe universe.

Abilities
Commander Cosmo has many superhuman abilities granted to him by the blue matter, such as a "sunbeam stare," super strength, unassisted flight, and the ability to survive unaided in space.

Universe Omega
In 1962, Commander Walter's ship is narrowly missed by a blue matter energy beam from a portal in Earth's atmosphere (created by Rabbit's core on Earth). The beam instead mingles with human DNA from a Russian space probe and creates the Daughter of Space.

the Astronaut
After this near death experience, The Astronaut heads back to earth to work on his inventions, creating a tech metropolis, and while his advancements are deemed helpful and innovative in the short run, they heavily drain the earth of resources.

In 1964, Commander Walter is on Space Militia 10's space station named "The Vulcan", when tragedy strikes the ship. Fire ravages the ship, and Walter watches in horror as his crewmates burn alive in front of him.

In 1966, Commander Walter's patrol vessel is destroyed by the Daughter of Space, without any malice in her heart. She was simply being curious about the spacecraft. In her curiosity about his existence, she then saves him and takes him deeper into space, keeping her alive via her power. It starts out innocent at first, with the two of them learning about each other and what they can accomplish together. The promise to take care of each other, and look out for each other. However, this newfound power soon goes to the Astronaut's head, as he realizes just what they can accomplish together.

The Astronaut relays this to Cosmica, who agrees to experiment with their powers. Together, they wreak havoc across the universe. It started out innocent at first, but with his power and spite growing, The Astronaut took it a step too far. Their first notable incident of mass havoc was when they destroyed the Spacecraft Delarue. They shot up next to the Spacecraft, and The Astronaut tore the hull apart with his own hands, dooming the ship and everyone inside. They fled the scene as they the Delarue fell into ruin. They destroyed other space crafts, such as Moon Base Delta Six, Moon Base Gamma One, Alpha Seven, and Omega 3 through 8. In this destruction, they killed hundreds of innocent people.

It does not take long for people in the galaxy to notice this destruction, and beg for a hero. That is when Ravaxis Starburner breaks Commander Cosmo out of his prison to help stop the two from causing more harm. With the help of EarthSpace Militia 10, they discover that Cosmica is his source of power, and she must be separated from him to neutralize him. Once Commander Cosmo takes Cosmica a sizable distance away, the Militia fires on The Astronaut.

In his dying moments, he realizes just how much pain and suffering he has wrought. Not only to those who didn't deserve to die, but also to his only friend throughout it all. Dying, he pleads out to her one last time, singing the song they promised to protect each other in. He tries to call out to her, but realizes his power is fading, as she is letting him die. He understands in his final moments that he became less than human, and inhumanely treated others, and accepts his demise.

For now.

The Necronaut
After the events of Oh No calm down, The Astronaut's corpse drifts through space, until it finds a shard of The Necrostar, clinging onto life. They fuse into one entity, known as The Necronaut.