First appeared in StormWatch #37 in 1996 and was created by Warren Ellis and Tom Raney. Jennifer "Jenny" Sparks was born on January 1, 1900 in England and was the Spirit of the 20th Century. When she was a teenager, her electrokinetic powers began manifesting and she stopped physically aging upon reaching adulthood. She became a colonel in the British Army Intelligence and became a member and leader of both Stormwatch and The Authority before her death at midnight, on December 31, 1999. As soon as she died, her successor, Jenny Quantum, was born on January 1, 2000.