The Unnamed Teacher is a minor character who works as a teacher at Dimmsdale Elementary School.
Not much is known about this teacher, as she is not even named and only appears in two brief gags during the entire series. She likes to make fun of Denzel Crocker behind his back, and has no problem laughing at him in front of him either.
She has a dark green dress, black glasses, brown hair, and she is tall. She speaks with a somewhat nasally voice. She also appears wearing a pink dress.
She only appeared in the episode, "Transparents!", where she was talking to Principal Waxelplax by the water cooler and telling her a joke about Crocker. While laughing, she and Waxelplax notice that Crocker overheard them, but continue laughing anyway. Later on, Crocker was imagining would happen if he caught a fairy and took over the world. In his imagination, she and Principal Waxelplax apologize for laughing at him before he zapped them both into smoldering marks on the ground.
The unnamed teacher also appeared in "Abra-Catastrophe!", in the scene when Crocker targeted Timmy Turner's Fairy-versary muffin with a fork-like device, but winds up hitting Principal Waxelplax, whom the unnamed teacher was standing near.
Her last appearance is in the episode, "Summer Bummer", where she alongside the other teachers launched themselves out of Dimmsdale Elementary after the dismissal bell in the last day of school, until she crashed on a car injuring herself, yet enjoyed it shouting, "Yay, Summer!"