Ϝ: Same as non-evil F but gets kidnapped. Debuts in Epsilon's episode on a "missing" poster Epsilon sees after he sees Iota. Ͱ: A guy who likes to lick things. He also gets kidnapped. Debuts in Eta's episode on a "missing" poster the letters in the βαγόνι (car) drive by (but don't notice) after Iota farts out Eta. J: Same as English J but gets kidnapped instead of dying. He fires two cannonballs at both of the Sigma siblings in Sigma's backstory, breaking their teeth. Debuts in Iota's episode on a "missing" poster Iota walks past (but doesn't notice). Ϻ: Same as ALBTWIAIOF R but colored differently, gets kidnapped, and owns the parenthesis gems instead of the quotation mark gems. Debuts in Pi's episode on a "missing" poster to the right of the car and the ΛΜΝΞΟΠ team. Ϙ: Same as ALBTWIAIOF S but gets kidnapped instead of dying. Debuts in Pi's episode on a "missing" poster to the right of the car and the ΛΜΝΞΟΠ team. Ϸ: Same as Þ from @wario100's fixed alphabet lores but fully red and gets kidnapped. Debuts in Sigma's episode on a "missing" poster Iota walks past while taking Lambda, Omicron, and Sigma to her cave (but doesn't notice). Ϛ: Same as @wario100's Greek 2.0 but isn't attached to a chain and gets kidnapped. He is traumatized because he saw the chaos going on between the letters in "φίλος" in Sigma's backstory. Debuts in Sigma's episode on a "missing" poster Iota walks past while taking Lambda, Omicron, and Sigma to her cave (but doesn't notice). Ͷ: Same as @wario100's Spanish but gets kidnapped. Debuts in Psi's episode on a "missing" poster Omicron notices after he, Lambda, and Sigma wake up. Ϡ: A stapler who stapled the Sigma siblings together after they got framed for spelling the bad word. Debuts in Psi's episode on a "missing" poster Omicron notices after he, Lambda, and Sigma wake up. In Iota's backstory, shown in Omega's episode, Sigma kidnaps all of the archaic letters, taking them to the other side of the Greek letters' planet, with the male part stealing San's gem and the female part stealing Qoppa's. Both gems later get stolen by Iota alongside Lambda and Omicron's gems in Sigma's episode. There is no Q equivalent because Iota cries out the question mark gem (which shows Sigma's backstory instead of Iota's, which is shown by Omega changing colors) when she dies. There is no Z equivalent because the letters live on a normal planet. Phi cries out the ellipsis gems after hearing Sigma's backstory. In the epilogue, titled "Την Επόμενη Φορά Δεν Θα Τραγουδάς Μαζί Μου" ("Next Time Won't You Sing With Me") due to Sigma's backstory episode being titled "Τώρα Ξέρω Το Αλφάβητό Μου" ("Now I Know My ABCs"), the male half of Sigma cries out the quotation mark gems, while the female half of Sigma cries out the ampersand gem.
Credit to everyone mentioned in part one. (I don't have to credit anyone else because all of the letters except Jot (who is unchanged from the original J) as well as Heta and Sampi (both of which I made myself) use bases made by wario100, who was already credited in part one)