Hibiki

Hibiki is a major character in LEGO Ninjago: Shadow of Ronin. He is the paranoid original owner of the Obsidian Glaive and a current inmate at Kryptarium Prison.

Shadow of Ronin
After the Ninja's memories were wiped by Ronin, they traveled to Kryptarium seeking Hibiki's help. After they fended off Ronin's samurai, Hibiki pointed them to Toxic Bogs where they could find Lemonberry to make a Tea of Insight.

Trivia

 * Judgeing from his knowledge of the memory stealing and alteration powers of the Obsidian Glaive, and his paranoid personality, it is possible that Ronin used the Obsidian Glaive on him (possibly to keep him from warning the ninjas or to aid them)