Primeape

Red / Blue: Always furious and tenacious to boot. It will not abandon chasing its quarry until it is caught.

Yellow +3: It stops being angry only when nobody else is around. To view this moment is very difficult.

Gold / HeartGold: If approached while asleep, it may awaken and angrily give chase in a groggy state of semi-sleep.

Silver / SoulSilver: It becomes wildly furious if it even senses someone looking at it. It chases anyone that meets its glare.

Crystal: It will beat up anyone who makes it mad, even if it has to chase them until the end of the world.

Ruby / Sapphire: When PRIMEAPE becomes furious, its blood circulation is boosted. In turn, its muscles are made even stronger. However, it also becomes much less intelligent at the same time.

Emerald: When it becomes furious, its blood circulation becomes more robust, and its muscles are made stronger. But it also becomes much less intelligent.

FireRed / Y: It is always outrageously furious. If it gives chase, it will tenaciously track the target no matter how far.

LeafGreen: Always furious and tenacious to boot. It will not abandon chasing its quarry until it catches up.

Diamond +6: It grows angry if you see its eyes and gets angrier if you run. If you beat it, it gets even madder.

Omega Ruby / Alpha Sapphire: When Primeape becomes furious, its blood circulation is boosted. In turn, its muscles are made even stronger. However, it also becomes much less intelligent at the same time.

Sun: It has been known to become so angry that it dies as a result. Its face looks peaceful in death, however.

Moon: Some researchers theorize that Primeape remains angry even when inside a Poké Ball.

Ultra Sun: It will never forgive opponents who have angered it. Even after it has beaten them down until they can’t move, it never ever forgives.

Ultra Moon: The blood vessels in its brain are sturdier than those of other Pokémon, so it can stay healthy despite its constant raging.