 However, it proved to be too easy to eliminate enemies this way, which the developers fixed by requiring players to touch the enemies after they've been flipped to defeat them.This was also how they introduced the turtle as an enemy, which they conceived as an enemy that could only be hit from below.Because of Mario's appearance in "Donkey Kong" with overalls, a hat, and a thick moustache, Shigeru Miyamoto thought that he should be a plumber as opposed to a carpenter, and designed this game to reflect that.