Roboto

Mattel's official origin says Roboto was built to play chess. It comes from the Masters of the Universe Classics cardback, released in 2010, which supplies nearly everything known about where he came from. The bio opens: "Real Name: Robot Model 9041. Originally built by Man-At-Arms as a chess opponent for Man-E-Faces, the robot companion was nicknamed Roboto and later given a heart-shaped emotion chip which altered his speech patterns."

The rest of the card says the new programming gave him an understanding of the desire for freedom, that he then upgraded himself for battle so he could join the Masters of the Universe against evil, and that he serves them as chief strategist.

The card makes his heroism a choice: he upgraded himself for battle after the emotion chip taught him what freedom was, and nobody drafted or reprogrammed him to do it. It also accounts for his stilted voice, which the same chip altered.

The card also makes him chief strategist for the Masters of the Universe, the planner of the group, which is an odd job for a figure sold on the strength of a spinning-gear gimmick. His card title is "Heroic Mechanical Warrior," and the vintage 1985 card front carried the same line in lower case, "heroic mechanical warrior."

Clipped from our own copy of He-Man and the Masters of the Universe, Happy Birthday, Roboto (1984), 7:42 to 9:40, 1 minute 57 seconds. Nothing is added and nothing is sped up. Copyright Mattel.

The 1985 Mattel figure is the reason people remember him. The torso was molded in clear plastic over a working gear train, and twisting the figure at the waist spun colored gears visibly inside the chest. It is among the most mechanically elaborate figures in the whole vintage line, and it is the detail almost everyone leads with when describing him.

The right arm was interchangeable, on the same principle as Trap Jaw's.

The Filmation cartoon gives Roboto one episode, "Happy Birthday, Roboto," where Modulok captures him and reprograms him to carry out his own schemes. He has a much larger part in the later series, which this site treats as additional material outside the classic canon.

The 2002 run gives him the most to do: a title episode, "Roboto's Gambit," scenes with the Heroic Warriors in chains, a camera-eyed arm cannon, and a glowing chest reactor that looks like a direct descendant of the 1985 figure's gear window. Revelation brings him back in 2021 with Justin Long in the role.

The reprogramming plot in "Happy Birthday, Roboto" sits oddly beside the cardback. Mattel's origin makes Roboto's heroism self-chosen, arrived at through a chip that gave him the concept of freedom. Filmation's one significant Roboto story is about that same autonomy being taken away by someone else's programming. The two accounts were written decades apart and do not reference each other, but they are pointed at the same idea.