So, here they are! Kappa's angry because (SPOILER) we never see him smiling as a lowercase. I also made Nu dying, his dead body, and him laughing as a ghost, as well as cardboard iota for the word that phi gets beaten up because of due to containing two iotas. I also made chi myself due to not having a face that resembles C like his uppercase form.
Credit 2 Every1, especially @JoetheScratchmaker for making the lowercase letters (except for eta, the dropped letters, gamma, chi, and the laughing beta), @florenciramir for making the lowercase eta (which I made the leg longer on), laughing beta, and dropped letters, and @NumberBots for making the lowercase gamma.