Fist Bump is the main theme of Sonic Forces, the 2017 Sonic Team platformer published by Sega. The track was composed and arranged by Tomoya Ohtani, Sega's longtime composer for the Sonic series, known for his work on Sonic Unleashed, Sonic Colors, and Sonic Frontiers, and features lyrics and vocals by Douglas Robb, lead vocalist of the American rock band Hoobastank. The song originally appeared on the Sonic Forces Original Soundtrack: A Hero Will Rise (2017), and its melody recurs as a leitmotif throughout the game's score. Added to maimai with the MiLK PLUS update on June 21, 2018, Fist Bump sits in the Game & Variety category. Its Master chart, designed by 玉子豆腐 (Tamagodoufu), holds a level 12+ with a constant of 12.9 and 752 notes, placing it among the higher-difficulty charts in the category. The Expert chart was crafted by 某S氏 (Bou S shi). Over the course of maimai's version history, the Master chart's level has been adjusted multiple times, rising as high as 13 during the UNiVERSE PLUS and FESTiVAL eras before settling back to 12+ as of PRiSM PLUS. The song is available across all maimai regions: Japan, international, USA, and China.