Quoted By:
I've always had a pretty similar idea to OP's,.
Essentially an Elite Four member who's main focus is the environment and who uses a team that symbolizes the many types of pollution he works to abolish.
A-Muk and Garbodor
>Just regular old trash/garbage, pretty straight forward
Amoongus
>Symbolizes litter and forest/field pollution
Dragalge
>Pollution of sources of water for all living beings
Weezing
>Air pollution and smog
M-Gengar
>The toxic mindset some humans have regarding their disrespect and disregard for their surroundings and ecosystem I know this is a little reachy and goofy but what's a Pokemon game without some camp?
The Elite Four room would be a standard battle arena surrounded by mounds of trash and sludge. The little pools to the side (similar to some of the earlier Elite four rooms like in Gens 1 and 3) could either be pools of hazardous waste/sludge or even extremely polluted water.