The Doctor (9th-11th Incarnations)

The Doctor, in his 9th, 10th, and 11th Incarnations, is the main character of BBC's Doctor Who series, and a key character in The Last On Earth universe.

Before The Last On Earth
In 2009, after the defeat of the Daleks, The Doctor transported Rose, Jackie, and Pete Tyler to Pete's World. He leaves them with a human version of himself (Meta-Crisis Tenth Doctor) for Rose to continue her life with, as The Tenth Doctor leaves. The Meta-Crisis Tenth Doctor makes an important point later in The Last On Earth universe.

The Last Above Earth
After finishing a Christmas Dinner with Amy and Rory Pond, The Doctor leaves them as he enters in the TARDIS. However, as he activates the TARDIS, the Time-Traveling Machine experiences technical difficulties and enters Pete's World. Wanting to know what was going on, The Doctor entered Pete's World and had no knowledge of anything currently happening there until he came across a newspaper claiming "John Smith" is dead. The Doctor then remembers that "John Smith" was the name he used when he first thought he was a human during his time in his 10th Incarnation, finally discovering that his human-clone that he left with Rose Tyler has died.

The Doctor attends the funeral the next day, as he later comes across some Daleks that tell him that something that "isn't right" happened, which caused it. One Dalek, which The Doctor calls "Nice Dalek", explains that the Daleks did something in the past that caused an error in the timeline, possibly during the Time War, though they aren't exactly sure. After much traveling, trying to find answers, The Doctor comes to the conclusion that Agent X/Perseus's accidental involvment in the Time War (caused by the Daleks) caused for there to be an error, eventually twisting certain points of the future. The Doctor then goes to leave Pete's World, but he finds the TARDIS replaced with a decoy version that's not even a TARDIS, as The Doctor finds himself trapped in Pete's World.

The Last On Earth
The Doctor does not appear in The Last On Earth. However, it is mentioned that SHIELD is tracking him down, believing he is searching for the TARDIS.

The Wrath Of The Last On Earth
The Doctor will appear in the sequel to The Last On Earth.