Susan Foreman (The Doctor's Universe)

"Susan Foreman" Was the alias taken by the apparent Granddaughter of The Doctor, she went travelling with him until she was abandoned to start a new life in 22nd Century Earth.

Susan was born to the Doctor's son, a wealthy Gallifreyan who wanted nothing to do with The Time Lord Academy due to the hatred of his father, Susan however grew close to her grandfather and always went to see him against her parents wishes, during her late teenage years she was taken away by her Grandfather in The T.A.R.D.I.S to escape Gallifrey, she went on a few adventures with the Time Lord before landing on Earth and taking the identity of Susan Foreman to attend normal Earth life as a British schoolgirl.

One night Ian Chesterton and Barbara Wright, two of Susan's school teachers became worried about the girl and followed her home in their car to find a junkyard with the Tardis, which was now disguised as a Police Telephone Box, Ian and Barbara burst into the Tardis after a confrontation with The Doctor, Susan pleaded with her Grandfather to let them leave but The Doctor took off, not wanting to reveal his secret.

Over Time, The Doctor became more trusting of Ian and Barbara, he grew closer to Susan as well, but the girl began growing independent and he realized his reach was slipping, so he became a bit harsher when she broke her foot after landing in the 22nd Century.

In the 22nd Century Susan met a resistance fighter named David Campbell and the two fell in love, realizing this The Doctor said his goodbyes to Susan, leaving her behind to deal with the aftermath of the Dalek Invasion of Earth, promising her that he would return.

Susan later met her grandfather several more times and during the Time War she was granted a regeneration cycle without going to the Academy due to her knowledge of The Daleks, she joined the war against The Doctor's wishes and fought in it on the side of The Time Lords before deciding to return home to live with her husband.