Eleventh Doctor (The Curse of Fatal Death)

The Eleventh Doctor was a possible future incarnation of the Eighth Doctor.

Biography
This incarnation came into being when his previous incarnation unwisely decided to tinker with some wiring.

Because women terrified him, this incarnation found Emma very intimidating, even appearing shy when talking to the Master due to his "breasts", which were, really Dalek etheric beam locators.

He regenerated into his his next form when he triggered an explosion after running into another room to avoid talking to Emma or the Master. (DW: The Curse of Fatal Death)

Behind the scenes

 * Like The Curse of Fatal Death, this incarnation of the Doctor was not considered canon. However, EDA: The Tomorrow Windows later brought him into canon as a possible future incarnation.