<Li> Ronald Longcape Sr. (Maurice Godin)--Ronald Longcape Sr. is Ronald Longcape Jr.'s father . He only pretends to be evil . Justin tricks him into revealing who his evil son is, by asking his name, to which he stupidly answers by giving his name, not realizing how obvious his name is . </Li> <Li> Dr. Mary - Beth Evilini (Octavia Spencer)--Dr. Evilini was an evil teacher at WizTech . She got Justin to participate in the 12 - Ball tournament (a wizard's version of ping pong), which could tell who is the most powerful young wizard . Her plan was to suck Justin's powers away at Volcano Land and take them for herself . Alex then found out about the plan from Evilini's messenger fish . Evilini's plan was later revealed after Alex used a truth spell on her . </Li> <Li> Frankengirl / Frankie Stein (Perry Mattfeld) - Frankengirl is a female monster Justin created to guard his room from Alex in the season 3 episode "Franken Girl". Her brain is the motherboard from Justin's laptop, which Alex then shuts down . Justin later uses magic on Frankie into wanting to be Alex's friend, and Frankie gets Alex to join the cheer leading squad with her . She is based on Frankenstein's monster . She reappears in "Three Monsters", and was accidentally sent to monster prison along with one of Justin's robots . </Li> <Li> Megan Russo (Carrie Genzel)--Megan is the embittered aunt of Alex, Justin and Max, and sister of Jerry and Kelbo and sister - in - law of Theresa . She despises Jerry, because he opted to give his powers to Kelbo instead of her . She was introduced in "Retest" where the Russo's try to convince her to re-enter the wizard competition against her brothers; but her grudge against Jerry is ongoing and as a result she refuses to compete . Her personality is similar to Alex, as she is characterized as lazy, sarcastic, artistic and selfish . As punishment for her behavior, she is no longer considered a member of the Russo family . She lives in Paris, France and earns a living as an artist . Max thought she lived in Paris, Texas, so he teleported him, Alex and Justin there . </Li>

Who played the frankenstein on wizards of waverly place