Bakugan Battle Brawlers

is a Japanese-Canadian portal-theme anime series produced by TMS Entertainment, Dentsu Inc., and Nelvana Limited which later spawned into a popular toy merchandise which is joint-ventured by Sega Toys and Spin Master. The story centers on the lives of creatures called "Bakugan" that can micro-size into spherical forms, and their bond with human partners labelled the "Battle Brawlers" as they battle for peace on different worlds alike.

Following the popularity after the first season's success overseas, TMS and Nelvana later produced three more seasons that premiered in Canada and the US before Japan.

A Japanese manga titled '''Baku Tech! Bakugan''' serialized from August 15, 2010 to January 15, 2014. It later received an anime adaptation aired on TV Tokyo from April 7, 2012 to March 30, 2013, followed by a second season called '''Baku Tech! Bakugan Gachi''' which ran from April 6 to December 28, 2013.

In 2015, Spin Master revealed their plans to relaunch the Bakugan merchandise which was later announced on November 30, 2017 to occur in the first quarter of 2019, hence the reboot first titled Bakugan: Battle Planet.

Mechtanium Surge
Though it aired in North American markets ahead, it was never broadcasted on Japan TV even though the Japanese dub was but made available on the Chinese streaming site Bilibili from September 7, 2018.