This cat was a very popular meme on the internet around 2011, created by Chris Torres at first destined to be a simple GIF
Nyan Cat has an "opposite" who's name is Tac Nayn.
Tac Nayn is a grumpy black cat with a waffle instead of a body. They're often shipped together or portrayed as friends, while Tac Nayn is shown to be a bit of a tsundere they're supposed to be nemesis.
Nyan cat is very happy-go-lucky and optimistic. It's very cute and annoying.
Supports the LGBTQ+ community, not ableist.

A grey poptart cat that flies through the sky.

From an internet meme from around 8 years ago. Big Classic

..are you seriously buying clothes THERE?

Fresh!sans is actually a parasite that took over Classic sans' body. The parasite resides in Fresh's eye socket, which is why he wears sunglasses. His sunglasses change to whatever he's feeling, for exemple "JOKING" or "NOT COOL" etc. He doesn't have any feelings but he acts pretty laid-backs he chill. He has no filter and is extremely blunt, he loves to spread chaos. He thinks of the concept of "friends" as a joke, he's manipulative but manages to stay likable. He uses the words "broski" a lot.