A: Same design as my Spanish, but is actually the equivalent of I. She gets poisoned like LHDA G. B: The same. C: The same. CH: Equivalent of @wario100's Spanish 1.0-3.0 Ñ but female. She built a fake letter generator, which gets stolen in episode Z. D: The same. E: The same but doesn't get kidnapped. He is the equivalent of A. F: The same. He is the villain trying to spell "disfrutando" (enjoying) by kidnapping the other letters. G: The same but dies on a spike in episode Y. H: The same as LHDA. I: English I's older brother who is the equivalent of E. Unlike English I, he doesn't have the ability to shoot titles. J: Equivalent of H. K: The same. L: The same. LL: Equivalent of J but doesn't die. He is a part of the superhero team, owning the diaresis gem. He also has a crush on X (yes, he's gay) but X is unsure whether to be with him or Y (yes, X is bi). M: The same. N: The same. He is the main character. Ñ: The same as Spanish but owns the acute accent mark gem. O: The same as French but gets kidnapped in episode Z. She owns the colon gem. P: The same. Q: The same. R: The same. RR: Equivalent of LHDA R but joins the heroes instead of getting kicked to the villain's lair. He owns the inverted exclamation mark gem, but he isn't telling anyone. S: The same. T: The same but gets kidnapped. U: The same as German. V: An eagle who acts as B's replacement. W: V's cousin. She gets killed along with P in the storm. X: The same but doesn't die and is fully lavender Y: The same but dies instead of X and is fully yellow. Z: A seahorse who acts as C's replacement. Unlike the character he looks like, he can survive on land. There are four episodes after Z: the first is F's backstory, the second seems like an epilogue but actually leads into the third which is another flashback activated by Q's inverted question mark gem, and the last episode is the real epilogue, where everything is resolved.
Credit to everyone, especially @PhonicLover44 for the sprites, for the base of CH, X, and Y, for the bases of H, I, Ñ, and Z, and Mike Salcedo for Alphabet Lore.