Chourave is le Concombre's best friend and aide.
Le Concombre Masqué
Nikita Mandryka (Kalkus)
Country of origin:
Any hero needs a friend and aide, and le Concombre being a cucumber, a radish would be an obvious choice. Chourave's first appearance has not been found yet, but he was not in the series from the beginning.
Example (click to enlarge):