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 Ancient Chozo Robot is an unused power-up in the multiplayer mode of Metroid 1.5. This likely became the "Vigilance" Class Turret in Metroid Prime 2: Echoes. The design also resembles the game's Ingsmashers.
Mode
"Ancient Chozo Robot Battle:
An arena Battle style game where you boost up into the chest plate of a gigantic ancient looking robot beast. Once inside the chest plate the robots become active. Once active you can beat the hell out of each other ‘till the cows come home.
Rules:
•Up to human 4 players, no bots, simple brawler style combat, robots are heavy and slow
•Goal is to be last robot standing, once your bot gets destroyed, you self-destruct.
•Single screen or split, depending on size of arena, although single screen would more than likely suffice.
•Damage is shown by chunks of metal flying off robot bodies and limbs dropping off
•No projectile weapons, just punches, arm flailing, and kicks.
•Controls:
Left analog: Forward, back, left, right
Right analog: arm flail clockwise or counterclockwise depending on which way you are rotating
A button: Punch
B Button: Kick
Non-canon warning: Non-canonical information ends here.
Trivia
- The idea of Samus using an exoskeleton to battle another is similar to the climax of Aliens.
- Similar exoskeletons appear later in the series: Ghor's Armorsuit and rideable Bryyonian Golems in Metroid Prime 3: Corruption and the RB176 Ferrocrusher in Metroid: Other M.