Looking at the other entries I now feel mine might be a little too far from the originals, but tbh I really like these designs and am submitting them anyway.
And as the entry rules said, I am giving a Pokemon line I feel did not live up to their 'base concept' a makeover--namely, the Beldum-Metang-Metagross line, whose base concept was this: a basic pokemon continually fusing together over and over to gain power, intelligence, and bulk.
First of all, I never got the whole concept of fusing together in the first place: why are the Beldum fusing together? How does that even work? And of course I never really got what the whole line was based off of aesthetically either so it was super confusing, and still is now.
So that got me thinking: What sort of concept WOULD make more sense? And eventually I got into power: if two bodies of enough power collide, they may overload, and create an entire new being. And this concept of overloading led me to think of batteries, and battery acid--which led to these guys.
If you look closely, you can see that the first stage evolution is in actuality composed entirely of head parts from the basic stage-- the heads of each of the two Basics split apart during fusion and become both a two-part mask and some shoulder-plates for the first stage. The bands holding the power cell of the basic together become a sort of belt helping the gooey plasmic body of the first stage solid. And of course the two batteries of the two basics merge together in the heart of the first stage, producing unimaginable power.
What happens naturally is the first stage, CELLOSIS, are gradually attracted during their lives towards large sources of power... and of course usually the largest source of power in the general area will be another CELLOSIS--so of course when the two meet, they absorb each other and cause a massive burst of energy, combining to form an even more powerful being, a gluttonous soul known only as GLUTASMA which will devour any and all energy in its path.
Additionally, to fit more closely with their theme of fusion and/or absorption to create new stages of evolution, I thought up a new ability, where being hit by a special attack would cause it to recover 33% of the dam,age done to it afterwards, if it survives, that is.