Asteroid

Asteroids are big rocks/minor planets that make a fire line wherever they go, the most common particles in them are Primordium Delta, which are found in 74% of asteroids.

I do not know much so I will check Wikipedia. (Yes, the only thing I stole from Wikipedia is that they are minor planets)

Dinosaurs (65,000,000 years ago)
Once, there was a huge “planet” seen from space, called an “asteroid”. It is way beyond a lot of them, and when it hit, it killed all species. (dinosaurs of course, but some may have survived)

ÆpÆ (entity that destroyed the megaverse 1 year ago)
Once when people were everywhere, the solar system started getting dark… then when the entity hit Portugal, they thought: “Where is Portugal?” And later, he destroyed all of the solar system, none was left… and he destroyed the entire megaverse.

Ghjo
Once, a asteroid named “Ghjo” hit a city, but it ended up hitting a house, and not a city, and it was the once destroyed thing that got destroyed, no one died, but everyone was scared. (In the city)

Zü
Zü is the weakest asteroid ever, it can only destroy a ant maximum, and when it hit Kville, it destroyed all of the ant’s body. Now it is not found, and it became the first ever ant in space, which later got vanished fully, because space is not a good place for animals. Remember, if you are an astronaut and have a pet, don’t put it in the rocket with you!