Tails’ native language is German, because the name Miles is of German descent.
So I believe the common language(s) on West Side Island were English and German.
Tails could speak partial English when he first met Sonic, and the two learned the other’s language (Sonic was ASL) so they could communicate.
Eventually, when Sonic could speak, they learned English together.
I do believe when they want to have a private conversation, they either use German or ASL (this is hard to do around Espio, but he pretends to not know what they’re talking about)
Thinking about Wyll and his new horns. Thinking about Karlachs horns. Thinking about nails and hooves and horns are made of the same material (keratin)
... horn painting night?
karlach and wyll horn painting night in camp with karlach’s very own badly painted NO HORNLESS LOSERS ALLOWED sign up to make wyll laugh
(allowances made for scratch and the owlbear cub, and also eventually made for lae’zel’s military precision thanks to her practice with warpaint, and then shadowheart because she insisted (with no memory to base it on) that she could do it better than that, and then gale because he saw there was a competition happening and wanted to be included, and then astarion, mostly because karlach insisted his one (1) glance over was lonely but also in a very real way because they only have three horns collectively and they ran out of space for the competitors and needed his nails)
Crow telling the children at the farm the story about a great golden eagle who saves the world by giving her life? BRB crying for actually a million years