A: The same but he gets kidnapped. Ą: First equivalent of Q. B: The same. C: Same as Italian. Ć: The equivalent of C. D: The same but he doesn't get kidnapped. E: The villain, equivalent of F. He is trying to spell "PRZYJACIEL" by torturing, killing, and capturing the other letters. Ę: My Spanish F, but dies. F: Equivalent of H. G: Same as French but doesn't die. H: I and J's father. I: A younger version of Spanish I, H's daughter, and J's twin sister. She gets kidnapped. J: H's son and I's twin brother. He gets kidnapped. K: The same. L: The equivalent of J but gets kidnapped instead of dying. (Note: Polish I and J's tittles are not explosive but can injure someone badly.) Ł: Equivalent of L. He and Ó are bullies. M: The same. N: Same as Spanish. Ń: My Spanish Ñ but doesn't die. O: Same as French. Ó: Equivalent of O, as he and Ł are bullies. P: The main character, and the equivalent of N. Q: My Italian J. She debuts in episode R due to not appearing in the traditional Polish alphabet and only being used in loanwords. R: The same. S: The same but dies instead of getting kidnapped. Ś: A seahorse. Second equivalent of Q. T: The same. U: The same. V: Same as Dutch but doesn't get kidnapped. She debuts in episode Y due to being a non-native letter. W: Equivalent of V. X: The same as German but has English X's role. He debuts in episode Y due to being a non-native letter. Y: The same, but is a different color, and gets kidnapped. Z: The equivalent of W but she gets kidnapped. Ź: A unicorn. Third equivalent of Q. Ż: The planet and equivalent of Z. He looks to the top-left since the other Polish letters live at the top-left of him, not at the direct top.
Credit to some people for their assets, including @Naadir11912
