Master Cylinder

"End of the line for you. You are the grass and I'm the lawnmower"

- The Master Cylinder

The Master Cylinder was an evil robot that appeared as a major antagonist in the 1960 Felix the Cat cartoon "Master Cylinder - Master Of The Moon", he would then proceed to become one of Felix's main enemies throughout the series: unlike The Professor Master Cylinder was never helpful nor friendly to Felix in any of his appearances and remained villainious (while The Professor often switched between the role of an antagonist or an uneasy ally).

The robot gained its name from its shape (which resembled a cylinder) and was given an origin in the Felix the Cat Movie in which it was revealed that Master Cylinder was a creation of the Duke of Zill and the most powerful of the Cylinder robots - Master Cylinder would proceed to make a brief appearance in the movie when The Duke unleashed an updated version of the robot in an effort to destroy the heroes.

However Felix acted quickly and threw a magic tome known as the Book of Oriana which saved Felix and his friends, at Master Cylinder, causing the robot to explode and seemingly destroying his old enemy once and for all.