Kart Fighter (Chinese: 瑪莉快打; pinyin: Mǎ lì kuài dǎ, lit. "Mario Fighter") is an unlicensed 2D fighting game produced for the Nintendo Famicom. The game features unauthorized appearances by Nintendo's mascot Mario and the rest of the cast of Super Mario Kart in a port of Street Fighter II. Since its release, Kart Fighter has received some media attention, including mostly positive reviews, in part because of its perceived similarity to the later Super Smash Bros. series.

King of Kings is a title that has been used by several monarchies and empires throughout history. The title originates in the Ancient Near East. It is broadly the equivalent of the later title Emperor.

Kinnikuman (Japanese: キン肉マン, lit. "Muscleman") is a manga series created by the duo Yoshinori Nakai and Takashi Shimada, known as Yudetamago. It follows Suguru Kinniku, a superhero who must win a wrestling tournament to retain the title of prince of Planet Kinniku. Nakai and Takashi planned the series when they were attending high school originally as a parody to Ultraman. The manga was originally published in Shueisha's Weekly Shōnen Jump from 1979 to 1987, and was first adapted by Toei Animation into a 137-episode anime series broadcast on Nippon Television from 1983 to 1986. It restarted publication in 2011, and has spawned spin-off manga and anime series, video games and Kinnikuman-related merchandise. The manga series has been popular in Japan, selling over 66 million copies by 2007. As popular as was the anime series and its merchandise, such as Kinkeshi, a line of action figurines released as M.U.S.C.L.E. in the Northern America. Although it received the Shogakukan Manga Award for children's manga in 1985, it has received mixed reviews from critics.