Pyros is a pivotal planet that is home to the Pyronites and Crabdozers in Earth-1010. It is has yet to be seen, but plays a major role in the events leading up to and including Death of Ben 10.
Pyros is a fully functional star, albeit with a surface of harsh volcanic rock as opposed to burning gas and plasma. It is totally inhospitable to humans, as its intense heat is completely forbidding to most other sapient species in the universe.
It is covered in sharp volcanic structures, volcanoes and mountains covering almost every horizon with rivers of lava carving infernal rivers through the environment.
Pyros was once ruled by a fair king of the Solar Dynasty, however he was overthrown by Apollo and his forces after Apollo somehow came to possess the weapon Ascalon. According to Sella, he came to power overnight and no rebellions would have a chance to rise against him.
During the early years of his rule, Apollo declared war against the planet Piscciss. After years of futile warfare the rulers of Piscciss were able to reach a peaceful agreement with Apollo's advisers, where they would attempt to convince Apollo to call a cease fire and let this be a 'warning' to the people of Piscciss. Luckily for both sides, he agreed and took pride in what little his war had accomplished.
Recently, Sella was able to escape from Pyros (a feat she claims to be the only one to achieve) and fled to Earth to recruit the help of Ben Tennyson, who she had heard of through his extranet show. Pyros is currently at war with the Earth. While the Plumbers assumed this was to retrieve Sella, Apollo has since disproven this. His true intentions are currently unknown.