Tech Revolution character concept 2

Here the antagonists. From the beginning I wanted to do this as a cameo of the guardians of Neo Arcadia (Megaman Zero). However, I did not want to go over the line so much, although it finally happened with other characters.
These here are robots created from Exenik as prototypes, as you may notice, 3 of them represent an element and one does not have it, instead it is "ether", just like in the stories about alchemy about the fifth element.
-Freeznik was "Icenik" at first-
Although sketches made in direct pen, the poses were not very well at all, an apology for it.