First Appearance: Menace #11 (May 1954).
Appearances: Menace #11, Weird Wonder Tales #5, What If v1 #9, Avengers Forever #3-6.
Years Active: 1950s.

A scientist in New York City created a vaguely-humanoid robot, which was capable of superhuman strength. The business rival of the scientist, jealous over the scientist's achievement, sabotaged the robot before its "regulator" was installed. The robot was then programmed to kill its creator, which it did. However, it then killed the saboteur, and went on a rampage in New York City. Ronald Byrd points out that the Human Robot, in Menace #11, did not fall into New York Harbor, short-circuiting itself, as Roy Thomas described it, but instead...well, I'll let Ronald tell it:

The deal with the Human Robot story was that, well, when the Human Robot's creator was first working on him, he told the robot "pick up the chair" as a test of the Human Robot's responses. The Human Robot (I didn't want to say "it" but didn't want to get us confused with another "he" along with the scientist and his partner) picked up the chair, and then picked up another chair, and another chair; the Human Robot did not obey the order just once but repeatedly. Some time later, the scientist's partner remotely orders the Human Robot to "kill the man in the room," i.e. the scientist. The Human Robot does so. Triumphant, the partner enters...and the Human Robot "kills the man in the room." The story ends with the Human Robot setting off into the night...looking for men in rooms. Creepy, huh?

However, a recent revision of the timeline has erased that adventure, and as far as is known the robot either lies, rusting, at the bottom of New York Harbor or simply went off into the New York City night and was never seen again.