[Taiki]

The artist that drew those Evolutions confirmed that they were fake and of his own imagining. Apparently the frog was based off of a leaked description though? He posted an image on dA of all 3 evolutions he came up with here. However sometimes when I view that image it is replaced by a weird traced doodle. So I dunno if he keeps switching them out as a joke or what. xD;

In the description he still has a link to that original picture that you posted Illusion.