From Teletraan I: The Transformers Wiki

Robotman is a mecha from the Generation 1 continuity family.

Remember when me and the Doom Patrol fought a man who wasn't there in a giant painting? Good times.

Robotman is a mecha that can be summoned by M121 Mason.

[edit] Fiction

[edit] DreamMix TV: World Fighters

As part of DreamMix TV's attempt to pull in more ratings, M121 Mason was invited to battle bunches of other beings, including Optimus Prime and Megatron on the television show World Fighters. In those battles, Robotman could be summoned. DreamMix TV: World Fighters

[edit] Trivia

• Robotman is from Takara's Microman toyline.