Mentor
Roshi
Both words in one sentence
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Dragon Gendoso's alter ego, "Roshi Ninja" (Roshi meaning "master"), directly references the fact that he is Ninja Slayer's mentor and is the Last True Ninja.
Source: Light Novel / Ninja Slayer - Goku's mentor, Master Roshi, disguises himself to participate without getting known at a tournament.
Source: Surpassed the Teacher - In the first Tournament Arc of Dragon Ball, Goku uses this against his far more experience opponent, "Jackie Chun" (Actually his mentor Master Roshi in disguise).
Source: Beat Them at Their Own Game
Cite this Source
Roshi and Mentor. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/mentor/roshi
Mentor & Roshi. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/mentor/roshi>.
Roshi or Mentor. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/mentor/roshi.
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