Robo-Mario

Robo-Mario is a boss that can appear in Super Mario 64. It is described as a clone of Mario but with gray skin. It has the same moveset as Mario. It is defeated by being slide kicked. It usually only appears when the player collects 25+ stars without dying, or beating a specific level such as Pokey Oasis that has certain properties.

Robo Station Way Appearance
A different form of Robo-Mario is seen in the Robo Station Way course. It appears the same as his appearance in Mario Kart Arcade GP. It functions as the boss of Robo Station Way. It reappears after Robo-Luigi is defeated. It appears in missions "Robo-Mario On The Attack" and "Robo-Mario's Return". The special abilities it has include being able to extend it's arms to punch the player and shooting homing Amps. In the Robo-Mario's Return mission, it gains the ability to spin around, spawn Bulllet Bills, and also does more damage, has more health, and is much more aggressive.