Nejishiki has charcoal grey-colored hair and tannish skin. He wears a Japanese kitsune mask, often worn in Noh theatre and Matsuri festivals. He also wears a red headscarf and a yellow yukata (light summer kimono) with a green sash.
The Birth of Arale
In It is! ...not there, the anime adaptation of Something's Missing!, Nejishiki is seen playing a taiko drum as a metaphor for Senbei Norimaki's shock that Midori is nearby while he is wearing the See-Thru Glasses.
In Which Will It Be?, Nejishiki is seen leaving when school ends.
My Toilet Paper
Main article: Volume 7: My Toilet Paper
He is seen among the residents of Penguin Village running after Arale and Gatchan in "Penguin Village Dom-Dom-Dom!", and also appears in the chapter "Stone Age Ho-Yo-Yo".
The Crazy Honeymoon
Main article: Volume 9: The Crazy Honeymoon
Nejishiki is seen with Rat watching Arale race the Gatchans. He is seen again playing with some strange looking monster people, including Gamera, while General Blue stops at the Phone Booth where he met Suppaman. Nejishiki makes funny faces at General Blue with the monsters.
- He is modeled on the engineer from Yoshiharu Tsuge's manga Nejishiki.
- His name means "twisted direction" in Japanese.
- The mask Goku's adoptive Grandpa Gohan wears in Dragon Ball wears the same variety of mask as Nejishiki. The only differences between the masks is that Nejishiki's mask has yellow eyes while Gohan's has red eyes.