Magic Screen is a screen on rollers that slightly resembled an Etch-A-Sketch; her screen flashed in an array of brilliant colors when not in use. She also showed films, and Pee-wee would frequently jump into the screen itself to interact with a fantasy land inside, usually to "connect the dots". Magic Screen can also function as a 1980s-era tablet with multiple backgrounds, as Pee-Wee and Conky played checkers on Magic Screen's surface, and later in Miss Yvonne's Visit when she and Pee-Wee play tic-tac-toe (noughts and crosses if you're from England). Magic Screen once mentioned having a relative, Movie Screen. In the Pee-wee's Playhouse Christmas Special, Magic Johnson stated that he and Magic Screen were "cousins", but no more information on their relation is given afterwards. Magic Screen is addressed as "she" and "her" in the puppeteers' commentary indicating that Magic Screen is actually female.
In Pee Wee Catches a Cold, she is referred to as a "person" when he harshly demanded her and the others to be quiet and stop screaming, as he was woken up by her and the others' loud screams. Cringing, she told Yvonne and Ricardo that Pee-Wee has become very crabby since overdoing himself and that maybe the two of them could help him.
In Heat Wave, she was the court reporter in Judge Herman's makeshift courtroom.
She has the ability to control the dots that players throw when playing "connect the dots"; this is evidenced in Sick, Did Somebody Say Sick? when she formed them into a prison cell to capture Randy, who went into her to mess around with her.
Magic Screen was parodied in issue #228 of Cracked Magazine, in the four-page comic Pee-Yoo's Playhovel, as Magic Scream. She had an identical appearance to Screen except that both of her arms and hands are in more robotic "pincer" shapes. She only appears in the first panel of the comic.