Teleportation device (The Brave and the Bold)

The teleportation device was created by the evil Professor Milo.

Early history
In Batman's first year, he found Milo working with two assistants Dr. Leo Scarlett and Dr. Wade Magny, who were apparently manipulated, but Magny was a cover for Edward Nygma. It created an unstable vortex and sucked Scarlett in, claiming his life.

Scooby-Doo! & Batman: The Brave and the Bold
Years later, Nygma became the Riddler reactivated the device to destroy Gotham City. Before the Mystery Analysts of Gotham destroyed the device, Dr. Scarlett was revealed to be alive in the vortex, having been caught in another dimension, with Batman pulling him free.

Appearances

 * Scooby-Doo! & Batman: The Brave and the Bold