The third season aired in syndication. For most of this season, the Technodrome is located at the Earth's core. Transport modules with drills are used to travel between the Technodrome and the Earth's surface. This is the longest season to date next to season four. Season 3 consisted of 47 episodes, running from October 19 to December 22. Most of the episode titles were based off classic movies. "Attack of the 50-Foot Irma", episode 21 was from Attack of the 50-Foot Women in 1958. "Turtles at the Earth's Core" title was from Tarzan at the Earth's Core. "20,000 Leaks Under the City" was from 20,000 Leagues Under the Sea. "Four Musketurtles" was from The Three Musketeers, "Invasion of the Turtle Snatchers", from Invasion of the Body Snatchers a 1956 film, "The Turtle Terminator" had a reference to the 1984 Terminator film, "The Gang's All Here" was from Hail, Hail, the Gang's All Here, a popular 1917 song, "The Grybyx" had a little Ewok like creature from Star Wars Return of the Jedi, 1983 science fiction film. "Mister Ogg Goes to Town" came from Mr. Deeds Goes to Town, a 1936 film. Turtles on Trial had a robot that looked like ED-209 from the movie ROBOCOP.First season where Krang's bubble walker appears.
The teeth design on the Turtle Van's bumper was missing when Michelangelo told Donatello to get them to the parade.
When Krang gives his flashback about transporting the Imperbium from Dimension X , he is still a brain along with his other kinds, but he had a humanoid body before exiled to Earth, then had it removed when he was on Earth.
When Shredder, Bebop, and Rocksteady get into the module, the Imperbium Gem is already on the generator that Rocksteady is holding.
When the audience cheers at the Turtles, Michelangelo's mask turns green.
The Foot Tenderizer on the Turtle Van was on the foot ramp instead of the top hatch when the Impervium Gem flew out of Leonardo's hand and onto the street.