By the brilliant but reclusive inventor, Professor Wobblebottom.
Utilizing an intricate system of pipes, pumps, and hispatric steam turbines, Professor Wobblebottom was able to create a device capable of moving people through dimensions.
But, as with all things, his magnum opus had its drawbacks.
Side effects included, but were not limited to:
Despite the risks, Professor Wobblebottom continued to refine his invention, driven by his insatiable quest for knowledge.
But, on the night of the fateful experiment, he vanished.
The steam engine still runs, but the Professor's whereabouts remain a mystery.
Some say, he was consumed by the dimensional vortex.
Others claim, he is still out there, tinkering away, lost in the vast expanse of the multiverse.
You can try to contact the Professor through the Last Known Address of the Professor.