Claudio

Claudio was an Auton styled after a Roman soldier from a book of Amy Pond's. He was affected by River Song's Hallucinogenic lipstick and believed her to be Cleopatra, and the Eleventh Doctor to be Caesar. He later helped place the Doctor in the Pandorica when the Nestene Consciousness took over him. When the Eleventh Doctor negated the Cracks in time, the Alliance was never created and Claudio never existed. (DW: The Pandorica Opens)