Ok in semi-quick summary of everyone in no particular order, we got:
[Main OCS]
Frost the Glaceon, Aussie warcriminal ice fox, very chill (pun partly intended) BUT NEVER BOOP HER.
Alex the Espeon, lord of muffins, canonically shipped with Frost, goofy boi.
Sylceon (Sylc) the Sylveon/Glaceon fusion, owns the stream, is a literal god somehow, Frost and Alex's only biological child, a good artist, kinda rude if you get her on a bad day.
Mewvee the Mewtwo/Eevee fusion, is an OG on the eeveelution squad along with Sylc, used to be nice but now he's pretty rude, doesn't come on much.
Uni the Unicorn Eevee, in contrast to Mewvee she is the nicest person you will ever meet.
Steve the Jolteon/Red Umbreon Fusion, doesn't come on much, likes countryballs.
Edge the Flareon, Frost's younger brother, doesn't come here much.
Leafy, I honestly forgot about her... Sorry.
Chorus the Rockruff, Chaos alien, loves coffee.
Sparky the Jolteon: Not on much, nobody remembers him until he shows up, chaotic boi like
Chorus.
Colt the shiny Jolteon, my own OC, the only one stupidly overpowered but not a god, also a goofy boi, very nice but mischievous, he WILL cuddle you and probably shock you.
Luna the undiscovered Eevee evolution, belongs to tokyo arts, isn't here that often, sorry if I forget the rest of your OC's tokyo...
Draxon the Eevee, pretty fur with glitch effects.
Silver the Shiny Eevee, very polite like me and Uni, always the first to help someone.
Midnight/Geevee the grey Eevee, likes the Roblox horror game 'Doors', never stops talking about it, fur tastes like banana.
Kitty the red Umbreon, complicated and sad past with her old family, has little self control and afraid of hurting people, adopted by Frost and Alex, true form is not actually an eeveelution? I dunno if I remember that right? Also a god like Sylc.
Rocky the shiny Umbreon, took a long break, hasn't been back since.