From Bulbapedia, the community-driven Pokémon encyclopedia.
Jubei (Japanese: ジュウベエ Jūbei) is a character of the day who first appeared in Training Daze.
He was a red team member and Jessie's twelfth partner (tenth in the dub). He shared a Mankey with her as well, until they failed a robbing test. This resulted in him getting a poor grade.
| Mankey is Jubei's only known Pokémon. While he was at the Team Rocket Academy, he shared it with his partner, Jessie. It lowered her into a vault containing an Articuno statue, but due to the rope getting stuck, they had to pull Jessie and the statue up, proving to be too heavy that they dropped it, triggering the alarms and resulted in injuring Mankey and Jubei.
|| Training Daze