Gandalf

Gandalf was a wizard (PROSE: Molten Heart) who, according to differing accounts, either a character in The Lord of the Rings, (PROSE: Mad Dogs and Englishmen, etc.) or a real individual who travelled through the Vortex alongside Batman and Wyldstyle. (WC: New Adventures Await!)

Biography
After travelling through the Vortex with Batman and Wyldstyle, the trio landed on the streets of New York City, where a ghost flew past. The Ghostbusters quickly began attempting to capture the ghost, before it broke free, with Harry Potter having to help. The trio then ran past Ghostbusters H.Q. and into a portal.

Reuniting with Batman and Wyldstyle, he then found himself in the Land of Ooo, before Finn and Jake appeared, proclaiming "It's battle time!". He then ran up a hill, where the TARDIS began materialising.

He later charged into battle alongside others, before ending up in a mosh pit including everyone who participated in the battle. (WC: New Adventures Await!)

Other references
A wizard, the character of Gandalf also appeared in a film series that Ryan Sinclair enjoyed. (PROSE: Molten Heart) In John Waters' drag adaptation of the book, Gandalf the Witch was played by Joan Crawford. (PROSE: Mad Dogs and Englishmen)

When sent a message to Martha Jones via a television broadcast, he showed her the aged Tenth Doctor and sarcastically said, "Say hello, Gandalf." (TV: Last of the Time Lords)

Later, the Eleventh Doctor said he was like a "space Gandalf". (HOMEVID: Meanwhile in the TARDIS)

When Ryan Sinclair first saw Basalt's cave laboratory on Adamantine, he commented that it looked like the study of a wizard like Gandalf. Much like the Master and the Eleventh Doctor himself previously, Ryan likened the Thirteenth Doctor to Gandalf, describing her as "sort of Gandalfy." (PROSE: Molten Heart)

Behind the scenes

 * In the real world, Gandalf is a character from both The Lord of the Rings and The Hobbit, by J. R. R. Tolkien.
 * William Squire voiced Gandalf in the 1978 animated version of The Lord of the Rings.
 * Ian McKellen played Gandalf in Peter Jackson's The Lord of the Rings trilogy; he later provided his voice for the Great Intelligence in The Snowmen. He also made a cameo as himself in costume as Gandalf on the set of The Hobbit in The Five(ish) Doctors Reboot.
 * Fourth Doctor actor Tom Baker was briefly considered for the part of Gandalf in The Lord of the Rings film trilogy; coincidentally, Seventh Doctor Sylvester McCoy would later be cast as Gandalf's fellow wizard Radagast the Brown.
 * Gandalf appears as one of the main characters in LEGO Dimensions.