Denkou Choujin Gridman

Denkou Choujin Gridman (Electric Giant Gridman, a.k.a. Gridman the Hyperagent) is a series produced Tsuburaya, the company that produced Ultraman. The show was broadcasted in Japan from 1993 to 1994; Dic took Gridman and reworked it for broadcast on American TV as Superhuman Samurai Syber-Squad. The story centers around three computer-savvy kids, Naoto, Yuka, and Ippei, who create a video game superhero that gets possessed by an inter-dimensional police officer called Gridman. Gridman is tasked with stopping and apprehending an evil program named Khan Digifer, who spreads digital monsters on the internet with the help of his human assistant Takeshi.

The Fiendish Brainwashing Strategy (Akuma no sen'nou sakusen-Episode 9)
Takeshi returns home from cram school angry after seeing his grades drop on his latest report; Khan Digifer senses Takeshi's frustration and helps him to channel that into making him a monster to get back at the school. Takeshi creates a ninja-style monster called Shinobira that is sent to the cram school. Upon entering and corrupting the school's computer system Shinobira uses his eye beams to hypnotize the teachers who are using the computers in the office and make them his slaves. The teacher of Naoto and Ippei's class appears in a video that increases enrollment in the school while at the same time revealing the Naoto and Ippei aren't doing well in their studies. The teachers are told to spread Shinobira's control to the students and teach the students "the curriculum of evil." Naoto and Ippei's teacher, Mitarai sensei, enters into his classroom in a military-style uniform and explains that the students will receive new instruction and are to look at their monitors. When they do, Shinobira appears and uses his eyes to make them his slaves. Minako, the trio's classmate, comes into class late to see her classmates all looking at her at the same time and wearing black headbands. She speaks to Matsuoka, the male student she sits next to; he merely glares at her. Mitarai-sensei comes over to her, orders her to look at the monitor and then holds her as Shinobira brings her under his control through the monitor, which puts a smile on the mind-controlled teacher. Matsuoka is seen wearing an altered school uniform and standing before manga in a bookstore; he hears Shinobira's voice telling him to take whatever he wants, which he does and leaves the bookstore. Ippei sees him and confronts him outside of the bookstore; Matsuoka proceeds to beat Ippei up and tells them he has to go to cram school. Minako, wearing a girl's sailor uniform, tries to take the allowance money of her younger sister; Naoto and Yuka stop her and Yuka asks her why she's doing this; Minako too tells them she's got to go to cram school. At the school, the students, all wearing uniforms, recite the fundamentals of evil: doing evil brings the greatest happiness, evil has the ultimate beauty, and living an evil life is the goal of humanity. Ippei, Naoto and Yuka enter into the classroom and are met by the glares of the mind-controlled students; they try to talk to Matsuoka and Minako but to no avail; Mitarai-sensei orders the students to attack the trio and the trio fight their way out of the classroom. The trio gets back to their hangout spot and summons Gridman; Gridman goes into the net and defeats Shinobira after a lengthy battle, which causes all the students and teachers under his control to suffer pain; Gridman then appears on the monitors and undoes Shinobira's control, returning everyone back to normal.