The Koopalings have appeared as boss characters in the spin-off Mario games Yoshi's Safari, Mario Is Missing!, and Hotel Mario, released from 1992 to 1994 on various platforms. They then appeared in the 2003 Game Boy Advance video game Mario & Luigi: Superstar Saga, where they served as bosses in Bowser's Castle, the last area of the game. They were supposed to be included in the Nintendo DS game Super Princess Peach but were cut for unknown reason, and only leftover sprites remain in the game. In Mario Kart 8 for the Wii U in 2014, the Koopalings made their debut as playable characters for the first time. They also then reappeared in Mario Kart 8 Deluxe for the Nintendo Switch. In Super Smash Bros. for Nintendo 3DS and Wii U and Super Smash Bros Ultimate, each of Bowser Jr. 's seven alternate costumes replaces him with one of the Koopalings, with each one fighting from atop the Junior Clown Car. They appear once again in Mario & Luigi: Paper Jam, released in 2015 for the Nintendo 3DS, in which they all once again carry out roles as bosses. In Paper Mario: Color Splash, the Koopalings appear as bosses for the first time in a Paper Mario game.