Analog robot
An analog robot is a type of robot which uses analog circuitry to go toward a simple goal such as finding more light or responding to sound. The first real analog robot was invented in the 1940s by William Grey Walter. The name of these robots were ELSIE and ELMER (Electro Mechanical Robot). The original circuitry was developed using two vacuum tubes and a photocell to search and follow a light. Recently a kind of analog robots was developed by Mark Tilden.
Spider-Slayer
The first series of robots were originally designed and built by Dr. Spencer Smythe with the financial backing of J. Jonah Jameson who piloted them for the pleasure of personally hunting the superhero he hated for capture. However, Spider-Man always managed to defeat each robot in turn. Smythe's continual efforts to perfect his machines backfired on him, leading to himself being fatally contaminated by radiation poisoning from the building materials of his creations. Blaming both Jameson and Spider-Man for this, he attempted, as a final act, to murder them both, but died just before Spider-Man thwarted the attempt.