Magnamite

Magnamite is a power station robot that supplies Metro City's power. It was designed in the form of an giant mechanical spider.

Story
Dr. Hiroshi Ochanomizu sent an emergency message to the Metro City power plant to reroute the city's power supply to the Ministry of Science in an effort to complete Astro Boy's awakening. Though the procedure was successful, Magnamite became overloaded with power and lost control, breaking out of its generator room and rampaging across the city.

Astro confronted the robot in an effort to save Dr. Ochanomizu. During the battle, the two realized they could communicate with each other, and Astro offered to absorb the excess energy from the giant robot into his own body. As a result, Magnamite was able to regain control and returned to the power plant where he continued supplying the city's energy.

Appearances
"Power Up! "

Video game
Magnamite makes an appearance in Astro Boy: Omega Factor as the game's first boss.