Frames are a semi-organic robotic species created by humanity for reasons unknown

Originally Frames were created purely in humankind's image however eventually derivatives were given the features of Earth animals

Frames work due to the organic metal that makes up their bones and shells found on the surface of Pluto named Anomilite which can replicate and grow when heated slowly allowing a frame to develop
it's predicted that Anomilite formed in Pluto’s core

However, the Core of the frame is the catalyst of the species, allowing them to grow and develop, the core carries and circulates the Frames code which holds both information on how the body works and how the body will grow and develop
(fun fact frames are sexless until they are fully grown and their bodies grow depending on their personality and other factors )

During the creation of the Frames’ concept the lead designers decided that Frames would benefit as a species if they were given the option to reproduce sexually as they would be cut off from humanity on Pluto, obviously being robots that is a challenge so the team split into Males and Female teams respectively to work on a reproductive system similar to the human one (and that's as far as THAT goes, not explaining THAT now)

Pluto was chosen as their home as the metal they would need to prosper was naturally generated there and so thus after the original amount of 500,000 Frames arrived they quickly began to prosper building massive cities

And then the Dyson incident happened, of course, no one could have predicted that what happened would happen the Sun rebelling against its cage, the violent pulse of energy terreforming each planet into a paradise that crushed the past under its glory, Pluto became a wonderful vicious amalgam of biomes and landscapes the most brilliant being under its surface now flooded with rainfall, the Frames ventured underground to start anew and have prospered for hundreds of years

(I definitely didn't write this in class)