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Meet your instructors

The team on the mat.

Most of our instructors came up through Empire Dojo, and every one trains weekly with Sensei Luis, so every class is held to the same standard.

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Sensei Luis Martinez
Meet the Owner

Sensei Luis Martinez

Owner · Master Instructor · 5th Degree Black Belt

Sensei Luis founded the dojo in Abingdon and built it into Empire Dojo. He is a Godan (5th-degree black belt) in the Shisenkan Kobudo Federation and trains directly under its Kancho, Ron Kosen, including regular training in Japan. He also holds the Shisenkan title of Bushi (“Martial Expert”), the federation’s first level of mastership, awarded only after passing the Bushi test.

That traditional training is the backbone of Empire Dojo: an authentic lineage and a traditional Japanese jujutsu and kobudo curriculum, taught alongside practical modern self-defense.

Today he teaches the adult jujutsu class and the leadership program, and leads weekly training for every instructor on the team, so every class is held to the same standard.

Sensei Athena Byrne

Sensei Athena Byrne

Lead Instructor · 3rd Degree Black Belt

Training since age nine and assisting in classes since twelve, Athena is a direct student of Sensei Luis and has trained in Japan with the Kancho of the Shisenkan Kobudo Federation.

Precise, energetic and nurturing, she connects with kids on a profound level.

Sensei Anthony Briggs

Sensei Anthony Briggs

Lead Instructor · 4th Degree Black Belt

A 4th Degree Black Belt working toward his 5th degree this year, Anthony has been training since age 13. Grappling and sparring are his specialty, and he is a true master of both.

He trains weekly with Sensei Luis and brings that grappling and sparring expertise to every class he teaches.

Sensei Sofia Byrne

Sensei Sofia Byrne

Assistant Instructor · 1st Degree Black Belt

Training since age six, Sofia earned her adult black belt in 2025 at just 14. She works primarily with the kids' classes and assists in adult sessions.

Her philosophy: “Have fun while training and don't give up.”

Senpai Jenna Fritz

Senpai Jenna Fritz

Instructor · Certified Instructor

A direct student of Sensei Luis, Jenna specializes in the youth programs and is exceptionally great with beginners.

Calm, focused and motivating, she creates a space where kids feel safe to learn and make mistakes: “Let's figure it out together.”

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