Katherine Corrigan

Katherine "Kat" Corrigan (played by Alexandra Purvis) - Rachel's daughter, 8 years-old at the beginning of the series. Though not a member of the Legacy, Kat often visits the mansion and is drawn into many of their adventures. She also has latent psychic powers, and it is hinted in several episodes that she will become a powerful force for either good or evil when she grows to adulthood.