303-986-5468 5280karate@gmail.com

The Team

The dedicated staff of 5280 Karate Academy Foundation creates a robust team of instructional experts for karate, self defense, early childhood, bully proofing, fitness, discipline, defense, and success!

We live by our black belt creed: modesty, courtesy, integrity, perseverance, self control, and indomitable spirit.


Grand Masters

Master Robert Lewis is the owner and founder of 5280 Karate Academy with branches in Lakewood and Westminster, Colorado. He was introduced to the martial arts in 1985, when one of his daughters was being bullied in the first grade. After about 18 months of watching class he decided to join with his two girls. In 1998, he began to seriously adhere to training and studying the martial arts, and was particularly drawn to the mental and spiritual aspects of the training. However, like most people with a passion of owning their own business, he found himself embracing the idea of owning his own martial art school. He approached Stephen Oliver about opening his own martial arts school; he opened the door to make that happen. He is both proud and deeply honored to have been given the opportunity to open his own martial arts school in the affiliation with Mile High Karate. The goal was to bring the beauty of the martial arts to his community and those who choose to step on the path of his instruction. “We grew very quickly and were very successful,” he says. He teaches martial arts to students in after-school programs in Lakewood, Littleton, Denver, and Englewood, Colorado. This caused a huge influx of young children and adults to join the martial arts. Robert “Master” Lewis is a 9th Degree Black Belt, he has trained with such notable martial artists including: Joe Lewis, Grand Master Jhoon Rhee, Grand Master Stephen Oliver, Grand Master Jeff Smith, Grand Master John Chung, and Superfoot Wallace. In addition to Roberts’s achievements in the martial arts world, he served two years in the Military; he also received his B.A. in Business Management from Wiley College, B.B.A. in Personnel Management from the University of Texas, and his M.B.A. from Regis University. Master Lewis teaches today out of the pure love he has for the martial arts, as well as the joy and satisfaction he receives from the students he works with.

Grand Master French is a 9th Degree Master Instructor. He received his 1st Degree Black Belt on November 4, 1995 where he was training with Stephen Oliver’s Mile High Karate. His training included: NASKA judge, Prepcycle Coordinator, and a CDT Master Instructor. He also trained with David Cox in Jujitsu and Knife Defense and stick fighting. Master French served on the board Westwood College in the Criminal Justice Program. Since 1970 he has been working in the Civilian Law Enforcement. His duties include: Police officer for the City of Chicago, Sheriff Department for Jefferson County, and is currently working for the Department of Corrections for the last 23 years.


Master Wren is a 7th degree black belt instructor at both the Lakewood and Westminster schools. He is also a second degree black belt in Okinawan karate. His weapon of choice is nunchucks. He has assisted with many prepcycles as well.

Devin Arkfeld started training in Taekwondo in 2002 at eight years old, when he saw a flyer on his elementary school’s news bulletin. With 18 years of experience, most of which he has been instructing, Master Arkfeld is a 5th Degree Black Belt. Alongside his training in Taekwondo, Master Arkfeld has explored other martial arts for several years, concentrating on Matayoshi Kobudo and Capoeira. Accustomed to the goal-setting and hard work required to attain the rank of Black Belt, he has also achieved the highest rank Boy Scouting has to offer – Eagle Scout. Master Arkfeld recently graduated college with a 4.0 GPA in environmental engineering. Master Arkfeld is also a nunchuku ninja.

Master Kat Wiegand is a 5th degree black belt master instructor.


Mr. Fitterer is a 4th degree black belt and the Prep Cycle Director. He and his daughter have done martial arts together and received each rank together.

Liberty Boston is currently a 3rd degree black belt at 5280 Karate Academy instructing at Lakewood. She has been at 5280 for eleven years and has treasured every moment. Over the past year, Liberty has earned her 2nd degree black belt in the Japanese style of Okinawan martial arts. Outside of the studio she enjoys playing basketball, running occasionally, and enjoying time with her wonderful family. Miss Boston is 16 years old but is often mistaken for older. Liberty takes school very seriously and has maintained an A average throughout the years. When she is not busy with sports or school (which is quite rare), Liberty is spending time with friends and her two adorable cats. Because Liberty started martial arts when she was so young, 5280 has made an enormous impact on her life and helped her to become very successful in numerous ways. She has made many friends on her journey and can’t thank all of her instructors, friends, and teammates enough.

Ms. Dempsey is a 3rd degree black belt instructor.

Mr. Dempsey is a 3rd degree black belt instructor.

Ms. Grosh is a certified second degree black belt. She started learning Taekwondo when she was 6 years old. She completed the instructor training program in 2019 and is a current instructor at 5280 karate.

Ms. Heim is a 1st degree black belt and a certified instructor. She started in August of 2016 and got her certified 1st degree in 2019.

Miss Fitterer is a 4th Degree Black Belt and started martial arts when she was 9 years old through an after school program. About 6 months later, her father joined and they trained together side by sider ever since. After receiving her 1st Degree Black Belt in April 2010, she took 2 years off due to an injury. Her and her father have continued to train together ever since and have recently taken over ownership of the school. Outside of martial arts, she loves to spend her time with family, friends, doing anything outdoors, and listening to music.