What if the Letter Factory was in Polish? Consider that. It will make the Letter Factory DVD longer. What will the letters look like? What will their traits be? I got them written down. A: Same, with the same sound as the English short A, as in "ant". Ą: Process red. She just says her nasal "a" sound. B: Same, with the same sound as the English B, as in "bed". C: Aquamarine. When water splashes on him, it turns into steam, with the "ts" sound as in "cats". Ć: Sky blue, but behaves like a choo-choo train. With the sound, "ch" as in "cheese". D: Same, with the same sound as the English D, as in "dog". Е: Same, with the same sound as the English short E, as in "egg". Ę: Apple green. He just says his nasal "e" sound. F: Same, with the same sound as the English F, as in "fog". G: Same, with the same sound as the English G, as in "go". H: Same, with the same sound as the English H, as in "hay". І: Same. His sound is the English long E sound, as in "feet". J: Same as the English Y, and the same sound as the said letter, as in "yak". K: Same, with the same sound as the English K, as in "key". L: Same, with the same sound as the English L, as in "log". Ł: Same as the English W, and the same sound as the said letter, as in "wet". M: Same, with the same sound as the English M, as in "man". N: Same, with the same sound as the English N, as in "net". Ń: Magenta. He likes to tease with the sound, "ny" as in "canyon". О: Same, with the same sound as the English short O, as in "on". Ó: Light-gray seafoam, but behaves like a ghost. He floats like a ghost. His sound is the English long U/OO sound, as in "boot". P: Same, with the same sound as the English P, as in "pie". R: Same, with the same sound as the English R, as in "red". S: Same, with the same sound as the English S, as in "sun". Ś: Light-indigo. She doesn't like a lot of noise. She wants things to keep quiet by shushing. With the sound, "sh" as in "ship". T: Same, with the same sound as the English T, as in "tea". U: Same. Her sound is the English long U/OO sound, as in "clue". W: Same as the English V, and the same sound as the said letter, as in "van". Y: Apricot. He just says the English short I sound as in "bit" with disgust. Z: Same, with the same sound as the English Z, as in "zoo". Ź: Blue, but likes to zip zippers. With the sound, "zh" as in "vision". Ż: Rose pink, but does the same thing with Ź. She is Ź's sister, mostly because her sound is nearly the same as Ź's.
Credit to @bren319 for the Letter Factory vectors.