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The Koopa Klub was a soda bar in Crime Land that was owned and operated by Al Koopone during the events of The Super Mario Bros. Super Show! episode "The Unzappables". Aside from being a hangout for various members of the Koopa Pack, it serves as Al Koopone's headquarters. After Al Koopone flees from Crime Land, Mario renames the Koopa Klub to Mario's Pasta Palace.
Little is revealed as to how Al Koopone gained acquisition of the Koopa Klub. Regardless, he was content in using the place as his headquarters, as he believed that Mario and his friends wouldn't be able to get inside very easily.
After Al Koopone supposedly drowns Mario and his friends in one of Crime Land's rivers, they prepare to infiltrate the club by dressing up as gangsters. Mouser at first refuses to let them in for not knowing the password, causing him to accidentally reveal that it was "cheeseballs". Mario's group is then able to enter the Koopa Klub, where they steal Al Koopone's Unzappable Hats from the coat check room.
While wearing the Unzappable Hats, Mario's group is immune to the Snifit bullets that the Koopa Pack shoots them with and manages to defeat them with Vegetables. Al Koopone attempts to flee from the Koopa Klub, but Mario stands in his way, forcing him to escape through a Warp Zone spawned from a Magic Potion. With Al Koopone gone from the Koopa Klub, Mario is free to rework the place into Mario's Pasta Palace, which becomes Crime Land's first Italian restaurant.