A: The villain. He is trying to spell "легендарни приятели", meaning "legendary friends" in Bulgarian. B: Equivalent of B. V: Equivalent of C. G: Equivalent of @wario100's Spanish CH except she gets kidnapped. D: Equivalent of D. E: Exact same. ZH: Equivalent of G except he dies instead of P in episode F. Z: Exact same as the previous version. I: Equivalent of Aircat's Spanish I. She is the main character. J: She has the same design as the oldest version. She uses her bullet as a weapon by A. A drops her in episode U. K: Equivalent of J except he doesn't die. He only gets burnt since J's breve is only half as powerful. L: Equivalent of L. M: Exact same. N: Equivalent of N except he isn't the main character and gets kidnapped alongside his gem. O: Exact same except he isn't a bully. P: Equivalent of P except she doesn't die. She also gets kidnapped while she tries to run off through A's cave, but A founds her and kidnaps her. R: Equivalent of R. S: Equivalent of S except he doesn't get kidnapped. T: Exact same except he gets kidnapped. U: Equivalent of U. He is needed to spell "БУМ", meaning "boom" in Bulgarian. F: Equivalent of V. KH: Equivalent of X except he is single. He is also a different color since he isn't one of the last three letters. C: Equivalent of Y except she is a different color since she isn't one of the last three letters. and more.
I am Super Rabbit! Credit to all, especially @fengshuitipsar for the Catalan A.