The Snowmen (in-universe)

The Snowmen was an episode of the television series, Doctor Who. The story featured the Doctor as portrayed by Matt Smith, and an individual portraying a character who resembled Walter Simeon.

On Red Nose Day 2013, clips from the episode played on a screen behind Claudia Winkleman, Dermot O'Leary, and the Eleventh Doctor. (TV: The Doctor Appears)

In a parallel universe in which the Doctor's life was a work of fiction, it was the sixth episode of the seventh series. It was released along with the rest of the series in a DVD boxset. (COMIC: The Girl Who Loved Doctor Who)