MTD

The MTD (Matter Transference Device, originally MDT), orTeleporter, is an interactive object found in Der Riese, Kino der Toten, "Five", Dead Ops Arcade, Call of the Dead, Shangri-La,Moon, The Giant, Der Eisendrache, Revelations, Classified, Alpha Omega and the multiplayer map Remnant. They were being built by Ludvig Maxis and Edward Richtofen along with their secret weapon, the Wunderwaffe DG-2. However, they were having many problems with the teleporters even at the point when Maxis and his daughter were sent to Griffin Station. Somehow these problems were fixed by the time Richtofen and the others returned.

In When the Cold Breeze Blows Away, not only being built by Ludvig Maxis and Edward Richtofen, and it also being built by Velvet Twirl (who became the Group P365's traitor later) and Dazzle Twister for the Group P365 or being built in Zeltwachen Infection.