Mankey

Red / Blue: Extremely quick to anger. It could be docile one moment then thrashing away the next instant.

Yellow: An agile POKéMON that lives in trees. It angers easily and will not hesitate to attack anything.

Gold / HeartGold: It is extremely ill-tempered. Groups of them will attack any handy target for no reason.

Silver: It's unsafe to ap­ proach if it gets violently enraged for no reason and can't distinguish friends from foes.

Crystal: It lives in groups in the treetops. If it loses sight of its group, it becomes infuriated by its loneliness.

Ruby / Sapphire: When MANKEY starts shaking and its nasal breathing turns rough, it’s a sure sign that it is becoming angry. However, because it goes into a towering rage almost instantly, it is impossible for anyone to flee its wrath.

Emerald: When it starts shaking and its nasal breathing turns rough, it’s a sure sign of anger. However, since this happens instantly, there is no time to flee.

FireRed: Light and agile on its feet, and ferocious in temperament. When angered, it flies into an uncontrollable frenzy.

LeafGreen: Extremely quick to anger. It could be docile one moment, then thrashing away the next instant.

Diamond +7: It lives in treetop colonies. If one becomes enraged, the whole colony rampages for no reason.

SoulSilver / X: It’s unsafe to approach if it gets violently enraged for no reason and can’t distinguish friends from foes.

Omega Ruby / Alpha Sapphire: When Mankey starts shaking and its nasal breathing turns rough, it’s a sure sign that it is becoming angry. However, because it goes into a towering rage almost instantly, it is impossible for anyone to flee its wrath.

Sun: It can spontaneously become enraged. Everyone near it clears out as it rampages, and the resulting loneliness makes it angrier still.

Moon: Its raging tires it out and causes it to fall asleep, but the anger resonating in its dreams causes it to wake up—which infuriates it all over again.

Ultra Sun: The smallest of things could cause it to lose its temper. Because it doesn’t hold in its stress, this Pokémon can live a long time.

Ultra Moon: If one gets angry, all the others around it will get angry, so silence is a rare visitor in a troop of Mankey.

Let's Go Pikachu / Let's Go Eevee: An agile Pokémon that lives in trees. It angers easily and will not hesitate to attack anything.