What is a Non-Standard Character Design?

Fig 1: Standard Character Design in the TV show Gurren Lagann

Fig 2: The design for the Main Villian

Fig 3: The Anti-Spiral (a Cosmic Abomination)

A character that looks strange in the context of their cartoon world. Usually a main character and most likely because this main character was designed before the artist could get into the swing of drawing the rest of the characters. Either that, or it's to set the character apart. They might be eaither drawn in a style more realistic than most others, drawn in a sketch-heavy style, a chalk drawing-like style, or they look like some sort of deranged and villainous muppet. The character who recives is eaither a Comic Relife, The Main Villian, a Character's imaginary Friend, or a Cosmic Abomination.

i agree, a drawing to set him apart. not to be confused with any other character.
This article showes a agood visual observation in a show. I will make more observations-good work