Caulkin

Caulkin is a researcher introduced to Ryoma by Jeff to work in Ryoma's laundromat.

Appearance
He’s described as looking like a laid-off thin middle-aged salary worker.

Background
Disgraced as a familiar magic user, and a former nobleman, he studied slimes and has been living in the slums until he began working for Ryoma. Worked with Lobelia and Tony.

He used to work in the same research facility as Leipin before Leipin left. They start to reconnect when they meet each other at Ryoma's store.