Mairwyn (Shrouded)
From Tardis Wiki, the free Doctor Who reference
In a parallel universe, Mairwyn successfully recruited Ianto Jones as a partner in crime. Together, they visited another universe, where they secretly observed the funeral of Ianto's counterpart from afar. Ianto suggested that they stayed in this universe, commenting "I can't believe there's a reality where I said no." (COMIC: Shrouded)