Aunt Grimalda

 is Samantha's aunt. She is a member of the Witches Certication Committee. She travels with Enchantra in a car chauffeured by Rasputin. She enjoys Maurice's flirtatious attention.

Grimalda was one of the witches who tested Adam's powers in 1972. The two ladies threatened to dissolve Samantha's marriage if Adam was mortal, which meant that Darrin himself would be dissolved. However, Adam proved to have some magical talent, therefore the Stephenses' marriage and Darrin were saved.