Alex Campbell (Restoration of the Daleks)

Alex Campbell was a companion of the Eighth Doctor.

An alternative version of the Doctor's great-grandson, Alex was taken from his universe by the Dalek Time Strategist and joined the Doctor in his adventures, travelling with him and Cass Fermazzi.

Early life
Whilst Alex was mostly human, he was also part-Time Lord due to him being the Doctor's great-grandson. (AUDIO: Meanwhile, Elsewhere)

The Dalek Time Strategist found and captured Alex during his sojourns through the multiverse and attempted to use him to manipulate the Eighth Doctor into ensuring the destruction of Gallifrey and end the Last Great Time War. The Doctor refused and revived him from a cryogenic casket after thwarting the Strategist. (AUDIO: Restoration of the Daleks)

Travels in the TARDIS
Alex joined the Doctor in the TARDIS, but the Doctor kept him unaware that the version of him from his universe was dead, (AUDIO: Meanwhile, Elsewhere) having been killed by the Daleks. (AUDIO: To the Death)

Personality
to be added