Toa

Toa are the biomechanical, heroic warriors of the BIONICLE series. They served as the protagonists in the series and they also seen appearing as the group, although sometimes there was a single Toa and so on. In the storyline, the Toa's main goal is to protect the Great Spirit Mata Nui, the Matoran and eventually the universe from various threats wrought by Makuta Teridax, Brotherhood of Makuta, Dark Hunters, Piraka, Barraki and other villains.

There are four well-known Toa teams that appeared in the main storyline which are: Toa Mata, Toa Metru, Toa Inika and Toa Hagah, although other Toa appeared in the story as well.

List of Toa Teams
1.) Toa Mata/Toa Nuva
 * The Toa Mata are the most famous Toa team to ever appear in the history of the Matoran Universe. They also served as the major protagonists in the main event of the storyline due to their major appearances throughout the series. Prior to the main event of the series, the Toa Mata were once created by the Great Beings before dispatching them into the Matoran Universe to protect Mata Nui.

3.) Toa Inika/Toa Mahri