FusionDex

Trubat flutters through polluted city skies, scattering toxic, gem-like sludge from its bat-like wings. It targets trash heaps in the dark, emitting high-frequency ultrasonic waves to easily locate and consume rotten, discarded waste.

Over the course of evolution, its hind legs turned into wings. The combination of garbage bags and industrial waste caused the chemical reaction that created this Pokémon.