Teenage Mutant Ninja Turtles (1987 TV series) season 4

The fourth season of Teenage Mutant Ninja Turtles is split into two main sub-sections that aired concurrently: thirteen episodes which aired daily in syndication, and twenty-six episodes that premiered in hour-long double-bills on Saturday Mornings on CBS. Additionally, a two-part "Easter special" aired in syndication the following Spring.

The syndication episodes featured the original title sequence, while the CBS episodes debuted a new title sequence, also did away with the show's title cards, and included a brief "Turtle Tips" segment between the two episodes which served as a PSA about the environment or other issues. There were a total of 20 "Turtle Tips" segments produced and aired.

During this season, the Technodrome is back in Dimension X, having been launched from Earth through a portal at the conclusion of season 3. The season premiere, "Plan 6 from Outer Space", aired in syndication, and detailed how the villains' battle fortress crash-landed on an asteroid; in the later episode, "The Dimension X Story" a volcano on the asteroid erupted, immobilizing the Technodrome by surrounding it with molten lava. "The Dimension X Story" was evidently intended to be the first episode of the CBS run, as many other episodes which aired before it from both the syndication and CBS episodes refer to the Technodrome being trapped in lava, but wound up airing very late in the season.

Note that the Vacation in Europe episodes take place between the first two episodes of this season.

Episodes

 * All forty-one fourth-season episodes were directed by Fred Wolf.