|Full Name||Saiki Kumagoro|
|Manga Debut||Chapter 92|
|Anime Debut||Season 1 Episode 19|
|English Voice||R. Bruce Elliott|
|Japanese Voice||Yamadera Kouichi|
BackgroundKumagoro is a grumpy old man who hates Kusuo's father Kuniharu and loves his daughter Kurumi. He is actually a tsundere  who truly wants to dote on his grandchildren. He is surprisingly gets along with Riki.
- His name, Saiki Kumagoro, is a pun on the word Psychic (サイキック Saikikku), just like the rest of the Saiki family.
- Kumi and Kumagoro's Japanese voice actors, Rie Tanaka and Koichi Yamadera respectively, were actually married at the time of their debut episode's production, but the two divorced in 2018.
|v · e||Saiki Family|
|Members:||Saiki Kumi · Saiki Kumagorou · Saiki Kurumi · Saiki Kuniharu · Saiki Kusuke · Saiki Kusuo|
|Miscellaneous:||Anpu · Pushi · Warp|
Community content is available under CC-BY-SA unless otherwise noted.