So a bit of backstory on these two, they share the same father, the ginger cat is a maine coon, and the size of an average neutered cat, tho they are not neutered, a bit of a mutation. Their mother was also a maine coon which means she's a purebred.
The little black and white kitty is of a normal moggy, since cats irl can have multiple fathers per litter, the father of the ginger cat was one of the fathers of this cat. However, this cat gained the traits from other mates and was small and lean. The lack and white kit was a tiny bit kittypet and mostly clanborn. But the ginger kit was full kittypet.
Once the mother of the purebred maine coon realised this, she took the kit to the clan at a young age, as anyway she had too many kits to care for. She left the maine coon kit with the mother of the black and white kit. Now these two will have eachothers backs, even though (black and white kits name) is grumpy on how she's the runt and (ginger kit's name) is not.
Now i need names ranks and genders, what do you think it might be?
EDIT:I think ill make the ginger cat a she cat, but not sure about the black and white one.
The ginger she-cat is called Robinpaw (Robinflight, working on it)
The black and white she-cat is called Rookpaw (Rooksong)