>>20276855What if these Pokémon draw from Norse mythology? The World Tree Yggdrasil was said to have four deer amongst its branches (X, who has four branches on either side of its head), an eagle atop it (Y), a dragon at its roots, and a squirrel who scurries throughout and delivers messages. W and Z, anyone?
Does anyone think that any other letter-based Pokémon such as pic related could come into play here?