Aunt Hagatha

 is Samantha Stephens' aunt. Enchantra is her sister.

Hagatha chairs the committee that tests Tabitha's powers. Over Darrin's and Samantha's wishes, she, Enchantra and Endora attempt to kidnap Tabitha so she can attend Hagatha's school for witches, but Maurice stops them. She often babysits Tabitha. She studies metaphysical meditation.

Like Enchantra and Endora, she is disdainful of mortals like Darrin.

Trivia

 * It is unknown how Hagatha is related to Endora and others in Samantha's family. In the episode, Endora says she was an only child until Arthur was born. Since witches are immortal and live for thousands of years, it is possible that these people are many degrees removed from each other.
 * Reta Shaw wears the same dress when playing both Hagatha and Bertha.

Episodes

 * Nancy Andrews in The Trial and Error of Aunt Clara
 * Diana Chesney in Speak the Truth
 * Kay Elliot in Tabitha's Very Own Samantha
 * Ysabel MacCloskey in Darrin Goes Ape and This Little Piggie
 * Doreen McLean in The Battle of Burning Oak
 * Reta Shaw in Witches and Warlocks Are My Favorite Things and Samantha's Witchcraft Blows a Fuse