The Technodrome is the semi-spherical tank-like metallic mobile fortress of Krang and Shredder, the main villains in the 1987 Teenage Mutant Ninja Turtles cartoon, the Archie comics Teenage Mutant Ninja Turtles Adventures comics and most TMNT video game adaptations
The Technodrome was designed and built by Krang and his main engineer, Drakus, in Dimension X, Krang's home. At some point before the series, Krang took the completed Technodrome and banished Drakus to Earth. Krang is later separated from his body and banished to Earth himself along with the Technodrome. He meets Shredder and they begin their partnership
The Technodrome is capable of surface, subterranean, or underwater travel. If equipped with an engine powerful enough, it can also journey into outer space. The Technodrome is also equipped with a super portal that can transport the structure through dimensions. Krang utilized this to bring the Technodrome back to Earth, but the Turtles later used this to banish the Technodrome permanently to Dimension X.