"What's the matter? All I said was that Komaytos look like little Metr—"

Non-canon warning: This article or section contains information that may not be considered an official part of the Metroid series in the overall storyline by Nintendo.


The Overdog is a (presumably) Chozo-built supercomputer featured in Blood of the Chozo. Its exact specifications are unclear, but it features a network of information compared to the modern Internet and apparently has advanced sensors and can predict the future to a limited extent. It may represent the future of the Aurora Units for the Galactic Federation.

Apparently, one thousand years prior to the Metroid series, the Overdog had a "chosen race" of Chozo refered to as the Proto Chozo, who existed in a massive ancient city on Naiad. The events and original characters present in Blood of the Chozo are not regarded as official canon in the Metroid timeline.

Non-canon warning: Non-canonical information ends here.


  • The name "Overdog" may be something of a portmanteau of the contrasting words "overlord" and "underdog".