I imagine that pseudos would generally dominate whatever environment they inhabit, with the exceptions of Metagross which probably doesn't eat in the normal sense, and Goodra which seems to be a herbivore. I also think Braviary, Staraptor, and Fearow would be around the top of their food chains, being some of the most powerful non-legendary birds if compared to their inspirations.
>>19702961So Aggron is basically like some massive turtles or elephants? I could see it working. Not much of a predator, too large, thick-shelled, and powerful for most other creatures to take down unless a pack corners one or they get sick. It would probably still be pretty high in the food chain in an area with mostly Steel and Rock types, though.