Technodrome

The Technodrome is a fictional spherical mobile fortress in the Teenage Mutant Ninja Turtles franchise.

Original Cartoon
The Teenage Mutant Ninja Turtles discover the Technodrome in Earth's underground. After infiltrating the Technodrome, they finally send it to Dimension X in the Season 1 finale (Shredder and Splintered). Krang and Shredder later returns the Technodrome to Earth in the Season 2 finale (Return of the Technodrome), but the Turtles send it to Earth's core. In the final Season 3 episodes (The Big Rip Of, The Big Break In and The Big Blow Out), Krang and Shredder return the Technodrome to Earth's surface, but at the end the Turtles again send the Technodrome to Dimension X. Krang and Shredder send the Technodrome to Earth at the beginning of Season 5 (My Brother, the Bad Guy), but the Turtles trap it in the Arctic. During Season 6, when Krang and Shredder try to get the Technodrome moving again, the Turtles trap it on the bottom of the ocean (Rock Around the Bllock). Krang and Shredder keep the Technodrome moving again at the end of Season 7 (Get Shredder), but the Turtles once again send the Technodrome to Dimension X where it stays for the rest of the Series (seasons 8–10).

Teenage Mutant Ninja Turtles Adventures
As the early Teenage Mutant Ninja Turtles Adventures comics adapt the early episodes of the Original Cartoon, the early appearance of the Technodrome is the same. However, as the comics switched to original storylines, the Archie Comics sees Krang rebuilding the Technodrome.

British Teenage Mutant Hero Turtles Comics
In the British Teenage Mutant Hero Turtles Comics, published by Fleetway Comics, the Technodrome's appearance is similair to the Original Cartoon and Archie Comics. However, it is more often seen moving.

Video Games
In many of the Original Video Games, the Turtles must infiltrate the Technodrome and face Krang and Shredder.

IDW Comics
The Technodrome appears in the IDW Comics.

Nickelodeon Cartoon
In the Nickelodeon Cartoon, the Kraang posses several Technodromes, who are flying vehicles. At the end of Season 1, the Krang bring one of their Technodromes to Earth. At the end, the Turtles defeat the Kraang and the Technodrome is sent to the bottom of the ocean.

Out of the Shadows
In the 2016 film Out of the Shadows, Krang brings the Technodrome to Earth, but is defeated by the Turtles. Even in this incarnation, the Technodrome is a flying vehicle.

Crossover
The Original Cartoon Technodrome is seen in the 2009 animated film Turtles Forever, which is a crossover between the Original Cartoon and the 4 Kids Cartoon. The Original Cartoon Technodrome is also seen in the Nickelodeon Season 5 crossovers with the Original Cartoon.