Butch Koyasu

Kosaburo Butch Koyasu is from Saffron City in the Kanto region. He's a former member of Team Rocket and is now a member of the Tekiyoku. He's a Grass Manipulator.

Present
Butch hasn't debuted in the main series yet, but has been seen in the Transmissions. He appeared in Transmission #6 along with Giovanni, Cassidy, James, Jessie, Meowth, and Domino, all formerly in Team Rocket, too.

This Transmission was mainly about how Giovanni started the Tekiyoku and how the leadership eventually changed to Lysandre. It also covered a brief look on the legend of Dark Manipulation. Butch revealed his Manipulation, which is Grass. He also expressed his annoyed feelings on Cassidy and Meowth mispronouncing his name.

Naming

 * His first name, Kosaburo, is his Japanese name in the Pokémon anime. It comes from Saburō, which means "third son". This is compared to the Japanese name for James (another former Team Rocket member who rivaled Butch). His Japanese name is "Kojiro", which comes from Jirō, meaning "second son". Butch's name meaning "third son" is a means to signify his lower standing compared to James.
 * His middle name, Butch, is his name in the English dub of the anime. It comes from Butch Cassidy, an American Outlaw. That is also where the English name for Cassidy came from as well.
 * His last name, Koyasu, is the surname of his Japanese voice actor, Takehito Koyasu.

General

 * His birthday, May 5th, is another reference to his Japanese voice actor, Takehito Koyasu, as this is his birthdate.
 * The gimmick of people misprounouncing Butch's name was actually done in the Pokémon anime.