I know I am really late on this, but here is my two cents: I am alum of Upsilon Chapter. On the crest on our charter there is a dragon, not a unicorn or a lion (it also says Alpha Delta Phi
). We were told that each other original 20 chapters or so each had a different mascot on their crest. This was before the organization had an official mascot and they were "trying out" their various options. We were always very proud of our charter because we do not know of any other ADPI chapters that have a dragon!