Parallel universe (The Daft Dimension 489)
From Tardis Wiki, the free Doctor Who reference
In a parallel universe, a version of the Doctor travelled in "The Mystery Time Machine" with alternate versions of Strax, Vastra, Jenny Flint, and K9.
He loosely resembled the N-Space Twelfth Doctor. (NOTVALID: The Daft Dimension 489)
Behind the scenes
This universe is a clear parody of Scooby-Doo.