Guinevere One

Guinevere One was a Human-built space probe sent to explore Mars in 2006 in order to look for signs of life. On Christmas Eve 2006, it was intercepted by a Sycorax spaceship and never reached its destination. Among other articles, it contained a sample of Daniel Llewellyn's A+ blood which the Sycorax exploited, using blood control. (DW: The Christmas Invasion)

Behind the Scenes
Part of the inspiration for Guinevere One came from the failed Real World British probe Beagle 2, which would have landed on Mars in Decembe 2003.