They are from this video: https://www.youtube.com/watch?v=po-NzJCg9po Though they appear earlier than that. They appeared first in "Alphabet Lore but the letters in order": https://www.youtube.com/watch?v=Plw-hAS_XTc The ideas and designs are much more crazier than The Imtimely Alphabet Lore, remember these guys? https://www.youtube.com/watch?v=Pg6Iro4St9M
C2A. (Including Mike Salcedo.)
