Kahn Digifer, also known as Dark Lord Kahn Digifer (in Japanese: 魔王カーンデジファー, Maō Kān Dejifā) is an evil computer virus who is the sworn enemy of cyberspace superhero Gridman and the main villain of Denkou Choujin Gridman.
He is a legendary 'Devil' of the Computer World that wishes to wreak havoc on the Human World. Putting Takeshi Todo under his control, Khan Digifer uses him to create monsters which he brings to life in order for them to attack the Computer World.
He later upgraded himself into a powerful, child-like version of himself called "Gigantic Kahn Digifer" (in Japanese: 巨大カーンデジファー, Kyodai Kān Dejifā) for his final battle with Gridman, destroying Gridman's Helper Vehicles and overwhelming him. Kahn Digifer was ultimately destroyed by the Grid Hyper Beam.
- Due to his helmet, he resembles the Shredder of Teenage Mutant Ninja Turtles fame.
- He was referenced by Belial in a DVD special feature where Ultraman Belial berates him for not taking care of Gridman (Who at the time was demanding to know why he wasn't in the UltraGalaxy film.)
- He is the last humanoid villain in a non-Ultra series, following in the footsteps of Dinosaur Satan Grottes in Dinosaur Great War Izenborg.