Trivia: What is NOT an enemy in the original Mario Bros. game?
The correct answer is Peachpitters
So why is this answer correct? : Mario and Luigi have long been made to suffer an onslaught of creatures, starting in their 1983 titular smash Mario Bros. While the crabs (Sidesteppers) and flies (Fighterflies) are mostly confined to the New York City sewer setting of this early arcade game (which preceded the debut of Super Mario Bros. and the Nintendo gaming console), the Shellcreeper would methodically follow the plumbing pair on further adventures in the form of the not-distant-at-all relative, the Koopa Troopa.