enemy/boss is obvious, intentional ragebait
1. Sans (Undertale): gets around having 1 attack and 1 defense by dealing 1 damage per frame and dodging every one of your attacks; >!an intentionally unfair difficulty spike meant to make you rage quit in order to stop your killing spree.!<
2. Monsieur Frappe (Clair Obscur: Expedition 33): Optional fight that was probably a joke at the expense of players who complained about the game’s sometimes unintuitive parry timing; this one fakes you out and insults your parrying abilities for not anticipating unfairly timed attacks.
3. Groal the Great (Hollow Knight: Silksong): This boss caps off Bilewater, arguably the most challenging zone in the game, which is infested with silk-draining maggots and enemies that ambush you with erratic movement. Additionally, he has easily the most treacherous runback to the arena if you die to him. Meant to communicate how hostile the Stilkin tribe has become under the oppression and pollution of the Citadel.