Loki (mythology)
From Tardis Wiki, the free Doctor Who reference
Loki was a god in Norse mythology. He was regarded as a trickster, a shapeshifter, the joker, and one who spoke in riddles.
Freydis mistook the Eleventh Doctor as Loki. (PROSE: Dark Horizons)
In a universe that never happened, "Loki the liar" fought Krishna. (PROSE: Dharmayuddha)