 Mechano cat first appeared in "Push Button Kitty" (1952) as Tom's rival.Later, Mechano and Robot-Mouse are seen as a cat-like-robot and mouse-like-robot who serve Tom and Jerry (except at the end of "Advance and Be Mechanized" (1967), when they get revenge and switch roles with Tom and Jerry, as they control their minds and make them do the work) in the three Chuck Jones outer space cartoons "O-Solar Meow" , "Guided Mouse-ille" and "Advance and Be Mechanized" (both 1967).Mechano's efforts to catch or trap Jerry or Robot-Mouse always backfire for Tom, except in "Advance and Be Mechanized", when he succeeds to catch Robot-Mouse in the beginning.