In A Tyrogue Full of Trouble, a Primeape was causing problems for a small town along with a Mankey and a Tyrogue. A Trainer named Kiyo was able to capture the Tyrogue, and the Mankey and Primeape joined up with him.
In Training Daze, a Mankey jointly under the ownership of Jessie and Jubei was used at the Team Rocket Academy for a test. It lowered Jessie into a vault containing an Articuno statue, but due to the rope getting stuck, Mankey and Jubei had to pull Jessie and the statue up; proving to be too heavy, they dropped it, triggering the alarms and resulting in Mankey and Jubei being injured.
Mankey also appeared in The Kangaskhan Kid.
Mankey appeared in a picture in Pokémon Paparazzi.
Mankey also appeared in Pallet Party Panic, at a party among other Pokémon.
A Mankey was among the Pokémon controlled by Cassidy and Butch in Pikachu Re-Volts.
Multiple Mankey were part of an exhibition in Flower Power.
Two Hits and a Miss featured a Fighting-type dojo where one of the many Pokémon was a Mankey.
Multiple Mankey also appeared in Celebi: Voice of the Forest.
A Mankey was seen in the wild in The Legend of Thunder!.
A Mankey appeared in the opening of Lucario and the Mystery of Mew.
A Mankey appeared in The Saffron Con as a Pokémon owned by a Coordinator.
It also had a minor appearance Pokémon Ranger and the Kidnapped Riolu! (Part One).
A Mankey appeared in A Rivalry to Gible On!.