Kevin Pacey wrote on Mon, Jan 18, 2016 03:15 PM EST:
Thanks Fergus. I saw a hexagonal variant diagram used by Charles G. some time ago in the Comments section, and it had me wondering about possible fairy chess conventions for piece images.
Fwiw, here's a wikipedia link, that mentions Banshee as an alternate name for Unicorn:
https://en.wikipedia.org/wiki/Fairy_chess_piece