... which began June 2017 (five months before the episode originally aired} and concluded April 2018. The hellish 'Metal dimension' the Teen Titans get pulled into is a parallel of the 'Dark Multiverse' the heroes are drawn into in Dark Nights: Metal, with the Heavy Metal Demon taking the place of Dark Nights: Metal's demon Barbatos. We even get the word 'Metal' filling the screen every few minutes! Plenty of typical Teen Titans Go! jokes, plus amusing references to the various myths/rumours and parent-paranoia surrounding heavy metal music - including the infamous 'backward masking' (hidden messages in music that are only apparent when the track is played backwards). Not really a fan of TTG but this was entertaining 7/10