Maxie Thompson

Matsubusa Sekien Thompson (nicknamed "Maxie") is the former leader of Team Magma and is now a member of the Tekiyoku. He's from Sootopolis City in the Hoenn region. He's a Fire Manipulator.

Pre-Series
Maxie was first seen in the Transmissions. He was one of the main speakers in Transmission #4, along with Archie. The two explained the meditation process for becoming a Manipulator.

Main Series
Maxie then appeared in the first episode of Tears of the Fallen. He was only seen for a short time during a meeting at the Tekiyoku Headquarters as members briefly discussed what was to come when the Plates stop being dormant. Maxie elaborated more on Alain's Watchful Eye ability.

Naming

 * His first name, Matsubusa, is his Japanese name in the Pokémon anime. It comes from 松房 matsubusa, which is Schisandra nigra. Schisandra nigra is a synonym for Schisandra repanda, which is a deciduous vine that's endemic to Japan and Korea. Matsubusa may also come from magma.
 * His nickname, Maxie, is his name in the English dub of the anime. Continuing from the above explanation, Schisandra nigra Maxim is the full name for Schisandra nigra, which in all is a synonym for the vine, Schisandra repanda. "Maxie" likely comes from the "Maxim" in that name. It could also come from "magma" and "maximum".
 * His middle name, Sekien, was randomly selected from a Japanese name generator.
 * His last name, Thompson, is the last name of his English voice actor, Marc Thompson.

General

 * His birthday, September 5, was randomly selected.
 * At the time of this writing, his Bulbapedia article doesn't mention the above information about the name "Maxie" coming from the synonym of the Schisandra repanda, the Schisandra nigra Maxim. It just mentions the last two possible sources for the name. Nocturnal Jay found the possible source being from the vine name during his own research.