The Arts in Space ( comic story ) Summary . In exchange for the invaluable assistance she offered defending New York – and to say sorry for dropping into her life like a tornado ! – the Doctor has promised Gabby one trip – just one trip ! – in the TARDIS . With the whole universe laid before her , all of time and space , where will Gabriella Gonzalez choose to go ? What will they find when they get there . . . and can one trip in the TARDIS ever be enough ? More importantly , the Doctor has been hurt by the fate of his companions before – and recently ! With Donna still fresh in his mind , can Gabby convince him that he shouldn ' t travel alone , for just a little while longer ? Plot . Part one . Given a choice for one trip in the TARDIS between the past , present , or future , Gabby Gonzalez picks the future . Knowing her artistic nature , the Tenth Doctor suggests visiting the Pentaquoteque Gallery on Ouloumos . Gabby absorbs the sensation of her first alien planet to the full . She is amazed by the strange landscapes , sky aqueduct s and all the subtle differences from Earth in the animals , the birdsong , the sand and the grass . With her excitement overflowing , she needs to share it with somebody . The Doctor acts like he has seen this all before , so Gabby decides to write and draw her impressions for Cindy . In the Pentaquoteque Gallery , the Doctor shows Gabby a variety of art styles , both futuristic and known in her time . Among the highlights on the Doctor ' s list are block transfer sculpture s by his friend Zhe Ikiyuyu , which she sings into existence using pure mathematics . Thus , he is all the more disappointed to find an empty room where Zhe ' s sculptures used to be . Determined to find out what happened , the Doctor takes Gabby to the museum curator , who explains that a century ago , having faced some criticism , Zhe had withdrawn their works and exiled themselves to their private retreat on the planet ' s moon , which can be accessed by a private space elevator . Since then , the only person to attempt a visit about seventy years ago was an art dealer , who quickly returned from the moon in a great rush . The elevator ' s robotic pilot Vernon recognises the Doctor by DNA , treating Gabby as a " plus one " and letting them board the elevator . Now Gabby can observe Ouloumos from up high . A path leading from the elevator to the gates of Zhe ' s mansion passed through a sculpture garden . Gabby thinks that these sculptures are somewhat old fashioned compared to the art she ' s seen in the Pentaquoteque Gallery . The Doctor explains that Zhe found beauty in any form - humanoid or alien — and that they used body augmentation to change between gender s and forms to see the world from different perspectives . Suddenly , the sculptures begin moving and try squashing the visitors . The Doctor lifts Gabby and throws her out of harm ' s way , then grabs her hand and runs towards the gates . He is surprised as matter manipulation on such a scale should have been beyond Zhe ' s abilities . Opening the gates with his sonic screwdriver , he correctly guesses that the sculptures will not follow them inside the grounds and proceeds to Zhe ' s house . The Doctor and Gabby are greeted at the entrance by a male figure , who calls himself the " Ultimate Apprentice " . He seems worried that the newcomers want to become apprentices too . But the Doctor assures him that he is an old friend of Zhe ' s and is just paying a friendly visit . The apprentice then brings them to a room where Zhe sits motionless . She has four arms , more than during the Doctor ' s last visit . Upon a closer examination , the Doctor concludes that this must be a block - transfer - sculpture self - portrait of Zhe . Suddenly , the Doctor and Gabby find themselves separated : the Doctor is still in the room with the motionless likeness of Zhe and the boy apprentice , whereas Gabby is in a different room with a figure almost identical to the apprentice but female . The girl apprentice accuses Gabby of lying and of trying to become an apprentice . Strangely , she also calls herself the " Ultimate Apprentice " . Gabby asks her about the male Ultimate Apprentice she just met . At this , the girl apprentice grows a second , male head and claims to be all aspects . Without waiting for the apprentice to finish growing more extremities with sharp claws , Gabby runs away trying to find the Doctor . Meanwhile , the boy apprentice accuses the Doctor of being a critic because he could hear them criticising the sculptures in the sculpture garden . He grows scissors from his hands and proceeds to attack the Doctor . The latter escapes onto a roof terrace , where he hears Gabby ' s cries from below and observes her throwing a plant pot at the multi - armed and two - headed apprentice . He calls to her and suggests to try finding Zhe in their studio in the glass wing . As Gabby runs back into the house pursued by the two - headed apprenitice , the boy apprentice catches up with the Doctor . He tries to reach the main stairwell , which he remembers from his prior visits , but the apprentice has modified the house layout , and the Doctor falls down what looks like an infinite stairwell . Part two . To the surprise of the boy apprentice , a trapeze suddenly appears , giving the falling Doctor something to cling to . The Doctor thanks Zhe for looking out for him and uses the trapezes to get to another exit from the stairwell . The angry apprentice transforms the whole spiral staircase into a dragon . The Doctor can ' t help being impressed with this real - time block transfer manipulations , remarking that even Zhe themselves was not this powerful . The dragon starts chasing the Doctor around the mansion . Meanwhile running away from the two - headed apprentice and trying to find Zhe , Gabby finds a studio filled with sketches for sculptures and paintings and other artistic bits and bobs . By the time the apprentice catches up with her , Gabby is so fascinated with some of the sketches that she asks to show her more . And when Gabby suggests she might even become an apprentice to her pursuer , the latter finally believes Gabby is not trying to take her place and reverts to a one - headed female form . The now female apprentice agrees to show Gabby her private sketches . The two understand each other very well , both being unsure of their artistic abilities . The girl apprentice explains her theory that drawing is the one of the first things life forms develop once the basic needs , such as food and shelter , are satisfied . She illustrates her words with moving images she creates using her block transfer powers . For her , drawing is the beginning of representational thinking , which leads to language , symbols , numbers . And numbers are what the universe itself is made of . The images surrounding Gabby turn into mathematical equations . The Doctor has found Zhe ' s Gallery and starts reminiscing . Suddenly he hears a question and recognises Gabby ' s voice . They walk along the gallery marvelling at the paintings and sculptures . The Doctor is wondering aloud at the computational powers the apprentice needs to change its own shape . He thinks it can even split into two entities . Behind his back " Gabby " ' s arm suddenly grows sharp edges . But the Doctor effortlessly dodges the blow and enquires if the boy apprentice , who has been pretending to be Gabby , and his twin are not themselves block transfer entities created by Zhe . He recognised the fake from the very beginning and is able to get away once again . Gabby is in awe of the girl apprentice ' s ability to create something out of nothing . The apprentice , won over by her sincerity , grows mouths on her hands and offers to impart some of her powers to Gabby . Not being able to resist the temptation , Gabby lets her . Meanwhile the Doctor manages to get back to the room with the four - handed Zhe and suddenly understands he was wrong before . This is not a sculpture of Zhe . It is Zhe , frozen and trapped but still able to help the Doctor by creating a trapeze swing for him or guiding him back to them . He takes their hands and tries reaching her telepathically . Gabby ' s first attempt at block transfer art produces a flock of butterflies . She hears the cosmic Song of Ages and her cosmic footprint is noted by an Ood . She also sees her past self singing . The girl apprentice thinks that Gabby has a natural resonance with the local quantum harmonics . Suddenly , the experience is interrupted by both aspects of the apprentice feeling the interference in the neural connectors caused by the Doctor contacting Zhe . The male aspect of the apprentice walks in , merges with the female aspect , and leaves , intent on destroying the Doctor . The disoriented Gabby needs some time to return to reality , especially given that she is surrounded by levitating mouths who talk to her and speak what is on her mind . They call themselves little echoes of her . But soon Gabby runs after the apprentice . On the way , one of the echoes notices that sculptures are gathering outside the windows . While the Doctor is kneeling motionless in front of Zhe telepathically helping her return to her body from the deep internal seclusion , the apprentice splits into the boy and girl aspects again . Gabby pleads with them to believe in their good intentions and manages to persuade the girl apprentice . But the boy apprentice is unmoved . When the girl apprentice stands in his way , he calls on his artworks to destroy them all . The Doctor and Zhe open their eyes to the scene of total chaos with Gabby and the girl apprentice hand - in - hand , battling the onslaught of the boy apprentice ' s statues . Returned to the physical world , Zhe takes control . The creation of the binary apprentice was against the cardinal rule , and now she is planning to correct her mistake . She created block transfer manifestations of opposing aspects of her own psyche and now that they turned to destruction , she denies them existence . When it is all over , the Doctor introduces Gabby to Zhe . Gabby ' s echoes do all the talking for her in a brutally honest way that leaves her embarrassed . Zhe explains that Gabby is drawing the residual block transfer energy left over from her connection to the girl apprentice who is now in the blue quantum sphere . Gabby is subconsciously generating these little levitating chatterboxes . They move to the terrace and Zhe begins explaining how it all happened . She was upset by some criticism almost a hundred years ago and retreated to her moon . Feeling lonely she created the apprentice . But it almost immediately split into two aspects , each as powerful as her . She went into a voluntary stasis to try and drain the apprentice of the power . The Doctor is worried about Gabby ' s new abilities , but Zhe thinks that they will mostly subside , apart from an occasional incident and the general heightened awareness . They all return to Ouloumos , where the curator of the Pentaquoteque Gallery thanks the Doctor for bringing Zhe back . Zhe sees the Doctor and Gabby to the TARDIS and privately invites Gabby to become their apprentice if ever she decides to leave the Doctor . Gabby begins explaining that this was a one - off trip , but the Doctor interjects inviting her to travel with him permanently . Notes . Original print details . " to be added "