James

James is a high-ranking member of Team Rocket, acting as a field commander alongside his partner, Jessie.

Growlithe -> Arcanine
Arcanine is James' powerhouse, a powerful Fire-type Pokemon he uses primarily against tough opponents. It was originally obtained as a Growlithe when James was younger; as such, it is James' strongest and most loyal Pokemon, as well as a unique and rare Pokemon species among Team Rocket.

Its known moves are Flamethrower, Extreme Speed, Body Slam, Bite and Fire Blast. It ability is Flash Fire.

Weezing
Weezing is James' second Pokemon, and the first encountered by Red. It's a powerful battler, capable of poisoning the air and inflict poison status to foes. It's been with James since before his time in Team Rocket.

Its known moves are Sludge, Sludge Bomb, Flamethrower, Thunderbolt and Shadow Ball. Its ability is Levitate.

Victreebell
Victreebell is James' third known Pokemon. Being his weakest Pokemon, it is often used as his first choice against weaker opponents, but it was shown to hold its own against stronger fighters as well.

Its known moves are Razor Leaf, Vine Whip, Slam, Hyper Beam and Solar Beam. Its ability is Chlorophyll.