Evelyn"Grandma" Weir, is a powerful Earth priestess (a witch-like magical practitioner on the side of good). She reveals her powers to Sarah, Jane,Ethan and Benny and tells them that Benny was a Spellmaster and Ethan was a Seer (a person with the ability to see the future).
Evelyn has been there to give advice and aid them in the gang's adventures.
She drives a red-and-white 1956 Chevrolet in like-new condition.
In Independence Daze her name is revealed to be Evelyn, however viewers may have noticed that in Three Cheers for Evil when Benny and Ethan come across a photograph of her with former cheerleaders in the old yearbook, a different name is printed under the photograph.
The image gallery for Evelyn Weir may be viewed here .