The Sentinel

Antarus is a robot design created by Dronax.

Information
Hundreds of Antarus units were created to search for an artifact called the Magnavox, which Dronax wanted. Antarus units were very strong, intelligent, and determined by nature. They were also run off of a DNA-based system within their bodies. This later backfired when an Antarus unit developed its own will and personality. Antarus units were equipped with strong armor and a variety of weapons. Each unit was able to hold up to two powers to control, all of which being Protodermis, Plasma, Ice, and Metal.

Eventually, every Antarus unit was deactivated or had already been destroyed. Only one sole unit survived, but he became too unruly to serve Dronax for long.

Trivia

 * There was originally only one Antarus unit, and he was planned to be a Makuta instead of a robot. The idea was scrapped.
 * The Kanohi Antar is actually a Bionicle Stars piece from the Toa Tahu set.