Jackie Chan was an individual known for martial arts.
One of David R's interests was Jackie Chan. (PROSE: Who Am I? [+]Loading...["Who Am I? (feature)"])
After Ruth Clayton suddenly, through subconscious instinct, fought off a platoon of Judoon using hand-to-hand combat, the Thirteenth Doctor flippantly stated that she had "turned into Jackie Chan". (TV: Fugitive of the Judoon [+]Loading...["Fugitive of the Judoon (TV story)"])