Red

Red is the true legendary Pokemon master and champion of the Pokemon world and is Rusty's biggest idol. He has only been shown once in the Pokemon Rusty series in which he does not speak true to how he doesn't speak in the video game series. Despite being viewed as a minor character as he only makes one appearance, he is mentioned throughout the series as Rusty follows his Twitter making him in some sense a supporting recurring character as well. In the episode Celadon City Mall, Rusty mentions that he has two badges.

Appearances
Red is recurringly mentioned throughout the series, especially his Twitter account. His username is "RED_P0k3mast3r".

In Rusty's Rival, Rusty checks Red's latest tweet, and is as follows: "Just aced a battle with my RIVAL, BLUE! #Gottacatchemall!"

In HM Madness, Rusty checks Red's latest tweet, and is as follows: "My Charizard's Flamethrower really Cuts through the Competition!" This inadvertently starts a wildfire on Route 17, due to Rusty's interpretation of this.

In Team Rocket Ride Along, whcich is Red's first and only in-person appearance, Red makes himself unassuming by shrouding himself in a blanket. When a Team-Rocket-recruited Rusty attempts to rob him, he tosses the blanket off and his Charizard annihilates the truck Rusty and his Team Rocket accomplice planned to getaway in. Red appears to be sadistic here, as he electrocutes and burns the grunt before finally finishing him off (but only after the grunt shouts about how he "respects his craft"). He spares a fanboying Rusty and leaves a photo of himself signed, "Don't do drugs! Red".

Pokemon
Charizard: Red sent out his Charizard to blow up a car that a Team Rocket grunt tried to escape in.

Magneton: Red used a Magneton to electrocute the Team Rocket grunt trying to escape.

Gyarados: Red used his Gyarados to use Hyper Beam on a fleeing Team Rocket grunt.

Pikachu: Although it hasn't been seen, it has been mentioned by Rusty and is the namesake of Rusty's Kakuna. (now a Beedrill)

Trivia

 * Red's Pokémon, Charizard, Magneton, and Gyarados, use the cries of, respectively: Zekrom, Eelektrik, and Volcarona.
 * Upon Red's reveal in Team Rocket Ride Along, Steven and Wallace's theme song from Pokémon Ruby/Sapphire/Emerald is played.
 * Red's "Don't Do Drugs" autograph is amusing because in the previous episode Team Rocket Grunts saw Rusty's selling point as a grunt himself to be the fact that his bike had drugs stored on it.
 * It is unknown what happened to the Eevee in the Team Rocket truck Red destroyed. Red most likely murdered the Eevee; maybe even knowingly.