Sneak Peek Episode of the Comedy-Adventure Animated Series to Air on Nickelodeon Following Premiere of Live-Action Movie Musical Monster High The Movie Share it: @Nickelodeon @NickAnimation @Mattel @MonsterHigh #Nickelodeon #MonsterHigh Click HERE to embed the trailer. BURBANK, Calif., Oct. 6, 2022 /PRNewswire/ -- Nickelodeon and Mattel today released the official trailer for Monster High, the original animated series based on the globally loved and iconic Monster High franch