Crayon Shin-chan Wiki
173.avi snapshot 02.39 -2016.11.20 21.36
Rentarou Mauji tele
Kure 04 004

In the manga (Volume 4, chapter 1)

Rentaro Ujuin is a politician from Kasukabe.

He appeared for the first time very shortly in the episode 52b when Kuriyo Urima jumped into his garden. He also appears in 54a, 77c and 173a.