top tier character-building device in pokemon games is when a seemingly antagonistic character has a golbat on their team and then later has it evolved into a crobat, which requires significant friendship, thus signalling that the character was always a kind person inside (plumeria), is growing past their issues and learning to be kinder (silver), may hold a spark of kindness that undermines their cold and calculating image (cyrus), etc etc
Meanwhile, Ghetsis—who is an antagonist who pretends to be an advocate for Pokemon rights—faces off against you with an under-leveled Hydreigon, which in the canon lore of the series only happens when someone forces evolution early, and that Hydreigon uses a full-power Frustration in B2W2, suggesting that it absolutely loathes Ghetsis.