Rollo's TARDIS

Rollo's TARDIS was the TARDIS unit used by Rollo, a founding member and part-time field agent of the Celestial Intervention Agency.

Nature
It was a Model 51, and was affected with the same faulty Cybernetic Personality Matrix as other 51s: this meant that at the slightest sign of damage, its personality shifted from one persona to another, ranging from obsequiously helpful to chaotic and mischievous. (GAME: ) This sometimes made it hard for Rollo to convince it to take him where he wanted to go. On the other hand, it had an intact chameleon circuit. (GAME: ) Its TARDIS control room was decorated with various keepsakes from miscellaneous planets and time periods, including an antique armchair in a corner and a medieval suit of armour near the doors. (GAME: )

Origins
Like many Model 51s which had ended up in the Celestial Intervention Agency's possession, this TARDIS came into the possession of Rollo after it was handed in to by its original pilot due to the flaw in the Cybernetic Personality Matrix. (GAME: )

Early journeys
Verika began travelling with Rollo when she stowed away on his TARDIS just as it was leaving Gallifrey on CIA business.

During a visit to mid-20th century Chicago, where Rollo was investigating a plot of the Master's, the TARDIS's chameleon circuit made it take the form of a "coin-op phone booth". Jim Waters, a member of a biker gang the Master was in the process of decimating, tried to hide inside the booth and thus stumbled directly into Rollo's TARDIS control room, subsequently becoming his companion.

When one of his human companions became injured, Rollo voluntarily abducted Edinburgh surgeon Michael Duncan into his TARDIS, intending it to only be temporary.

David Smythe became a companion of Rollo's after he was rescued from the Sontarans by him and Volusa, stowing away in the TARDIS at the last minute as the two Time Lords departed from his time-zone.

Steven Reynart similarly stowed away aboard the TARDIS, having overheard that it was a time machine, after Rollo briefly, accidentally materialised it in one of Michael Reynart's archaeological digs in Old Sydney in the 26th century.

At some point, Rollo materialised his TARDIS inside an elevator in a London office building in 1985; overlaying itself over the real elevator, the ship disguised itself as one. When Jody Lockhart tried to use the elevator in question, she thus found herself inside the TARDIS; in her confusion, she bumped into the dematerialisation switch, thus causing herself to become accidentally shanghaied by Rollo as one more companion. (GAME: )

The Iytean investigation
Rollo and his companions were in the TARDIS when he received a psychic summons from the Celestial Intervention Agency, requesting that he return to Gallifrey for a briefing. They were instructed to investigate an alien presence in 1885 London, (GAME: ) where the chameleon circuit once again allowed the TARDIS to disguise itself. After they visited the house of Colonel Fraser, the time-travellers were followed back to the TARDIS by his granddaughter Julia Fraser, who, undeterred by its unlikely appearance, knocked on the door and made herself visible on the TARDIS scanner, demanding to be let in to speak with the time-travellers at greater length. There, she explained to them that she was worried for her grandfather's sanity. (GAME: )

Later, after finding the buried Iytean starship, the time-travellers were able to recognise it as Iytean thanks to information on the Iyteans and their history in the TARDIS's computer database, although accessing these data meant navigating the TARDIS's erratic personality. (GAME: ) Once the mystery was resolved, one possibility was that Julia Fraser, Thomas Carruthers, or both, would stow away aboard the TARDIS; (GAME: ) however, a more solid path for events to take was that Verika intentionally invited Julia to join the TARDIS crew. After Rollo decided to go on one last outing in 1885 London before leaving the time-zone, Julia thus waited for him in the TARDIS control room, sitting in the antique armchair, with Verika and at least one other companion. (GAME: )