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She first appeared in "Jeers for Fears", when Bobby helped Lincoln and Clyde prepare for the visit by enabling him a sneak peak of the Royal Woods House of Terror. One of the features is his drama teacher Mrs. Bernardo dressed as a deranged clown with barbecue tongs. Before moving on, Mrs. Bernardo asks for Bobby to tell his mom that they miss her at bingo night. Later that night, Lincoln and Clyde learn from Mrs. Bernardo about the owners finding out about Lincoln and Clyde's early visit causing them to let the staff go and to improve the scariness. This gives Mrs. Bernardo time to work on her one-woman show.
In "Stage Plight," Mrs. Bernado oversaw the production of "Romeo and Juliet" where Luan and Benny were cast as the leads. There were some complications due to Luan having never kissed before. Thanks to Luan's dummy Mr. Coconuts and Benny's marionette Mrs. Appleblossom, Luan and Benny got over this and made Mrs. Bernado's production of "Romeo and Juliet" a success.
Not much known about her personality. It is known that she's cheerful and theatrical.
She is a tall, tan-skinned woman. She has short brown hair, purple eyeshadow, and two pairs of eyelashes. She wears a white collared shirt, with a dark purple jacket around her, tan scarf, jeans, and brown boots.
In "Stage Plight", Mrs. Bernardo is redesigned where she has light skin, black hair, wears a yellow shirt, plum coat, golden circular earrings with dark green jewels, pink scarf, purple pants, and black slip-on shoes.