The 1974 anime series, produced by Knack Productions, is notorious for its unconventional narrative, subpar animation, and the main character's aggressive approach to battling incompetent extraterrestrials. The show is also marked by its numerous technical flaws, including awkwardly framed animation, repetitive soundtracks, and the absence of sound effects.

Chargeman Ken!
This 1974 anime series by Knack Productions is infamous among fans for its unusual storylines, below-average animation, and a 10-year-old protagonist with a tough exterior.