Ryūkage

The Ryūkage (ドラゴンシャドウ; Literally meaning "Dragon Shadow") are the leaders of Ryūgakure. They are generally the strongest in the village, although ideology and renown plays a large part in their being chosen for the position. Only one person has been named the Ryūkage and thats Omega Uchiha.

Overview
Since he was founder of the village, Omega was already placed as it's leader. Though even others of the village wanted him to take leadership over it.

First Ryūkage
Omega Uchiha (オメガサスケ, Uchiha Omega), known as the God of Fire Technique's or Human Dragon, is a powerful shinobi hailing from the powerful Uchiha Clan.