A: Exact same. In episode T, he gets beaten up so hard that he is unable to move like English T. B: Exact same. C: Exact same. D: Exact same. E: Exact same. F: Exact same as Spanish. G: Exact same as Spanish. He is trying to spell "glädje", which means "joy" in Swedish. H: Exact same as Spanish. I: Equivalent of H. J: Equivalent of I. K: Equivalent of J. L: The main character and equivalent of N. M: Exact same. N: Exact same as Polish except he owns the colon gem. O: Equivalent of P. P: Exact same as Spanish. She owns the diaresis gem. Q: Equivalent of L. He is one of the bullies along with W and Z. R: Exact same as Norwegian. S: Exact same as Xhosa. T: Equivalent of U. He is needed to spell "pistol". U: Equivalent of V. V: Equivalent of W. She spells "vekling" in L's nightmare. W: Equivalent of O except he doesn't transform. He is one of the bullies along with Q and Z. X: Exact same as Polish. Y: Exact same as Polish except she joins the heroes instead of getting kidnapped. Z: A strong jerk. He is one of the bullies along with Q and W. Å: Equivalent of X. Ä: Equivalent of Y except she gets kidnapped. Ö: Equivalent of Z.
Credit 2 Every1, especially @AlfabetonsOfficial for the bases of U, V, W, Z, and Ö (and also the idea of the rarest letters being the bullies), @LogoFan2016 for the base of K, and @TheReturnOfNB7_541 for the base of Q.