Saiki Kumi

Kumi Saiki (斉木 久美, さいき くみ lit. Saiki Kumi) is the wife of Saiki Kumagoro, Saiki Kurumi's mother, the mother-in-law of Saiki Kuniharu, and grandmother of Saiki Kusuo and Saiki Kusuke.

Appearance
Despite her old age, Kumi keeps the style of a modern teenage japanese girl, wearing clothes sexy for her style and a skirt shorter than her knees.

Background
Kumi is the lackadaisical kind of grandmother with a habit of wearing teenager clothes. After learning about Kusuo's psychic powers, she started asking him to teleport her to Shinjuku.

Trivia

 * Her name,, is a pun on the word Psychic (サイキック Saikikku).