1) Mechanical men 2) Robots 3) Robots, collectively 4) Sci-fi walkers 1) Robots 
• (pl. ) of Automaton
Plural of an automaton and refers to figures that are relatively self-operating and capable of performing multiple complex movements. Early examples feature doll-like bodies with composition or bisque heads.
Mechanical figures of varying sizes animated by clockwork, and later by battery, and in the 18th and 19th centuries produced mainly by clock-makers. Automata were created for display and for adults. They were often elaborately dressed and capable of detailed movements such as drinking and smoking, or depicted an animated scene with birds or figures …...