|(うちは一ルーク, Uchiha Rūku)|
|Appears in||Anime, Manga|
|Academy Grad. Age||6|
The son, and second child, of Fūjin Uchiha and Yūgao Hyūga, Rūku was like his father in almost every way. He became a Genin at age six and awakened his Sharingan at seven. According to Echo Uchiha, Rūku's son, he went on to become a Yamakage and a truly powerful shinobi. At some point in Rūku's life, he had son, Echo. According to Echo, he died when the boy was still young.
Little about Rūku is known. According to his son, he was one of the few people Echo learned to respect.
Rūku bore a striking resemblance to his father, Fūjin: possessing raven-black hair, pale skin, and Teiōgan eyes like his sister. Later in life, his hair seems to have become grey and he also had lost his right eye — wearing a type of black armor over the lost eye.
Rūku would contribute his bloodline and lineage to the continuation of the Uchiha Clan, which, thanks to his sister, would eventually become the Abura Clan.
- "Rūku" (ルーク) is the Japanese romanization of the English name "Luke". This stems from the fact that he was originally named Luke Uchiha.
- When he was first written, Rūku was Ryun's son rather than grandson. This was later retconed for the backstory of the Abura Clan.