Thread:Chimera-gui/@comment-31365078-20200226075333/@comment-4370375-20200227004732

Fair point, we don't know the when the idea of a serpentine tail made out of energy projecting from the physical stump of the tail originally came from so it could have come from HiMachinedramon or even predated both Xros Wars and Tri altogether with these being just the first known examples of it in actual media.

Given that Machinedramon has a full tail in World which came before Adventure, I want to assume the latter theory.