* EnsembleDarkHorse: The Future Turtles, especially Don and Raph.
* HilariousInHindsight: The comic was easily the darkest book Archie Comics published at the time, which led to several problems with the editorial because of the more adult content. In the 2010s Archie has started publishing [[ComicBook/LifeWithArchieTheMarriedLife several]] [[Comicbook/AfterlifeWithArchie darker]] [[ComicBook/ChillingAdventuresOfSabrina titles]] in order to reach an older audience.
* WhatDoYouMeanItsForKids: Some of the later stories rivaled the Mirage book in terms of grittiness, even though this was the kid-friendly TMNT book. This unfortunately led to problems with the editorial staff at Archie Comics.
** To elaborate: The Mutanimals were brutally shot to death on-panel. Despite time-travel being involved, the team stayed dead. When it was revealed the demon Null was behind it, he disguised himself as one of Candy's deceased friends just to torment her with an [[http://media.tumblr.com/tumblr_ltjg8gYsSR1qiqv4j.jpg image]] of the Mutanimals ''burning alive in hell''.
** Another storyline had future versions of the TMNT travel to the past, where they met up with Adolf Hitler. They tricked him into [[http://3.bp.blogspot.com/-6E3ds-KA7WU/UDfC3UDYPzI/AAAAAAAAIR8/o974L_lwEIk/s320/64-03.jpg committing suicide]].