>High level den mons get multiple turns, scale up like a motherfucker, and have a lot more than 4 moves, seemingly all of them having a self-buff, a move that clears debuffs from them, a move that clears buffs from you, and a move that puts up a terestralized barrier on their health bar.
These niggas basically have 8 moves, minimum of to moves per turn, and minimum of 500 health with max out defense/sp.def
Not that you'll get any benefit of that if you catch these motherfuckers, as all higher difficulty gives you is more maxed values.