- Monday - Thursday 3:45 PM - 8:45 PM
- 590 N. Alma School Rd., Chandler, AZ 85224
623-986-0521
623-986-0521
Some martial arts schools begin when a business opens its doors. Others begin long before that — through years of preparation, personal struggle, experience, sacrifice, and a vision that refuses to disappear. The story of Ki-Senshi Martial Arts officially began in the spring of 2008 in Tolleson, but its true foundation had already been formed years earlier through the life journey, discipline, and long-term vision of David López Aguilar.
Before moving to the United States in 2003, David had already established a strong martial arts foundation in Mexico, where he was already teaching as a Sensei and developing his identity as a martial arts educator. He held the rank of 2nd Dan Black Belt in traditional Karate, operated small teaching groups, and gained valuable experience assisting his instructor from an early age before formally leading his own classes. Long before Ki-Senshi existed as a school, there was already a clear internal vision: to one day build a martial arts academy with its own identity, one that would go beyond technical instruction and become a place where students could develop confidence, discipline, strong character, and life tools that extend far beyond training.
As a child, David’s first dream was not martial arts, but becoming a professional soccer player. However, martial arts completely changed the direction of his life. His journey began because of the determination of his parents — especially his father — who strongly pushed him to attend martial arts classes at age 13 even though he initially did not want to go. What began as resistance quickly became passion. From the very first day of training, martial arts deeply captured his attention and eventually became one of the strongest forces shaping his life. The support of both his mother and father became foundational. Planting seeds that years later would impact hundreds of students and families.
After arriving in the United States, David sought opportunities to continue teaching and received an opportunity to teach martial arts inside a dance studio. Although this first attempt represented an important beginning, language barriers made it difficult to fully establish himself at that stage, and eventually he had to stop. A physical injury also temporarily interrupted formal training for a period of time but never interrupted his deeper vision. Even during difficult seasons, he continued training independently, learning, growing, and preparing internally for what would later become Ki-Senshi.
In 2008, what appeared to be a simple family decision became the beginning of something much greater. David wanted his children, David III and Yaretzi, to begin martial arts training at a nearby school, but they did not connect with that environment. It was then that his wife, Dulce Mauricio Martínez, made a simple but decisive suggestion: “Why don’t you teach them yourself? You are already a martial arts teacher.”
That moment reactivated a vision that had never disappeared.
The first classes began outdoors in a public park, with family members, neighbors, and close children from the community. There was no official facility, no business structure, and very limited resources — only knowledge, conviction, and the desire to build something meaningful. Shortly afterward, classes moved into the backyard of the family’s home, where a more consistent rhythm began to develop. During this early stage, Sensei Guillermo Montano and Sensei Christian Jacobo also became part of the project, strengthening the classes and contributing to the development of what was still only an early vision. Training happened under extreme heat, wind, cold, and even rain, yet those very conditions helped shape the resilience and character that would later define Ki-Senshi.
When Life Tested the Dream. At the beginning of 2009, the family was directly impacted by the Great Recession, one of the most difficult economic periods affecting families across the country. Like many others during that crisis, they lost their home.
The classes had to stop. Equipment had to be stored away. The project that had begun with energy suddenly faced uncertainty and survival became the immediate priority.
Yet even when everything external paused, the vision itself did not disappear.
That stage became one of the earliest true tests of what Ki-Senshi would later represent: continuing forward even when circumstances become difficult.
In 2011, while David and Dulce were operating a small barbershop inside Mercado de los Cielos near Desert Sky, another unexpected opportunity appeared. During a conversation with Dora, the market coordinator, they shared that they were martial arts instructors and expressed their desire to teach again. Although they did not yet have enough resources to rent a full commercial suite, Dora offered them an open space inside the market.
There were no walls. No formal academy. Just an empty, open area.
With limited resources but strong determination, Sensei Dulce, Sensei Christian, and Sensei David personally built that first official training space. They still remember going to The Home Depot to purchase wood and materials, and how their friend Fernando helped build the wooden enclosure that would become the first official training floor.
KI-SENSHI
Ki-Senshi means Warrior Spirit. The name was chosen because it represented exactly what had already shaped the journey — obstacles, perseverance, sacrifice, determination, and the refusal to surrender despite adversity.The wooden enclosure that became a community. The first students in this official stage were again their own children, David III and Yaretzi, along with children from neighboring businesses inside the market. It was also in this same early stage that their youngest daughter, Maily, took her first steps. She literally learned to walk inside Ki-Senshi.
That detail captures something profound about the school: Ki-Senshi was built not only for families, but through family.
Soon after, Sensei Guillermo Montaño, Diana López, and their children Yuliana, Fryda, and Alexander joined the project. The space itself was simple, enclosed by wood, and affectionately remembered as “the corral.” Although humble in appearance, the atmosphere inside was already special. Families connected deeply with the training, the environment, and the way classes were taught.
Within less than eight months, the school had already grown to more than 50 active students.
As students began entering local tournaments, Ki-Senshi quickly started gaining attention. Although many schools had been established for years, Ki-Senshi students began standing out early through discipline, energy, and presence.
But what truly became unforgettable was the unity.
Parents, instructors, and students arrived together dressed in blue. There were so many of them, and they moved with such unity, that people began referring to Ki-Senshi as:
The Blue Wave
It truly looked like a blue wave entering every tournament.
That identity represented more than color — it reflected belonging, support, loyalty, and the strength of the pioneer families who became essential to the school’s growth. That first generation of parents played a decisive role in building the strength and solidity that allowed Ki-Senshi to expand.
By 2012, continued growth made it possible to rent the first commercial suite near the market. One year later, growth continued so strongly that the neighboring suite was added. With the help of parents, walls were removed to physically expand the school.
At that stage, Maily, at only three and a half years old, also began training, making the family even more deeply connected to the mission that was now becoming stronger every year.
Soon after, another major challenge appeared when the building changed ownership, and rent increased significantly. This forced Ki-Senshi to relocate again — a difficult decision because the new place was farther away, creating uncertainty about whether students would continue.
That move led Ki-Senshi to what is now its long-established home:
Ki-Senshi Martial Arts Tolleson
The relocation proved something powerful: most families stayed.
That confirmed that Ki-Senshi had already become much more than a martial arts school — it had become a true community bond.
At this location, Ki-Senshi has now remained for more than ten years. This stage has been filled with some of the most meaningful experiences in its history: black belt graduations, instructor development, student growth, emotional victories, tournament success, leadership formation, and continuous program refinement.
It was during this mature stage that the identity naturally evolved. The spirit of The Blue Wave remained part of the legacy, but a new phrase emerged to represent the next level:
Warriors Up represents readiness, mindset, resilience, and the decision to rise with purpose.
It means mentally standing up, responding positively to challenge, staying disciplined when life becomes difficult, and facing each day with energy, focus, and direction.
If The Blue Wave represented unity, Warriors Up represents evolution.
The first official black belt: a defining milestone in Ki-senshi history. In 2015, Ki-Senshi reached one of the most meaningful and symbolic milestones in its journey: the graduation of its first official black belt, Angélica Márquez.
This achievement represented far more than the awarding of a rank. It marked the moment when years of effort, sacrifice, consistency, and belief began to fully reveal their deeper impact. For a school that had started in parks, in a backyard, and later inside a simple wooden enclosure built with limited resources, graduating from its first black belt became powerful confirmation that the vision behind Ki-Senshi was truly taking shape.
It was proof that the school was not only growing in numbers, but also developing students capable of reaching a level that demands technical maturity, discipline, perseverance, character, and long-term commitment.
That moment carried special meaning because it represented the first visible result of a process that had been built step by step through trust, patience, and years of consistent work with families who believed in the mission from the beginning.
From that point forward, Ki-Senshi entered a new stage of maturity.
What began with one black belt soon became a growing legacy. Since then, more than 50 black belts have graduated through Ki-Senshi, many of whom began their journey as young children and today have grown into adults, professionals, athletes, instructors, and leaders within their communities.
Several of these students remain deeply connected to martial arts and continue contributing to the culture of the school, while others carry with them lessons that shaped their lives far beyond the training floor.
Over the years, Ki-Senshi students have also earned strong recognition in competition, achieving excellent results not only in local tournaments, but also at state, national, and international events. Their presence has stood out in both light-contact and full-contact disciplines, reflecting not only technical preparation, but also the mindset and identity developed through years of disciplined training.
Yet some of the most meaningful victories have happened away from medals and trophies.
Hundreds of students have found in Ki-Senshi a path to overcome low confidence, bullying, emotional struggles, fear, lack of discipline, and personal limitations. Through martial arts, many discovered inner strength, direction, and a greater belief in themselves.
Because at Ki-Senshi, a black belt is never seen at the end of a process.
It represents growth earned through years of consistency, resilience built through challenge, and the ability to continue rising with strength through every stage of life.
One of the strongest tests in Ki-Senshi history came during the global COVID-19 pandemic.
Like thousands of schools around the world, Ki-Senshi faced uncertainty, closures, restrictions, and enormous pressure.
Yet the school remained standing.
This stage demanded creativity, adaptation, discipline, strong communication with families, and unity from instructors, students, and parents.
More than ever, the meaning of Ki-Senshi — Warrior Spirit — became real.
Over time, Ki-Senshi also evolved technically.
What began strongly rooted in traditional Japanese Karate gradually developed into a modern hybrid training system integrating:
This evolution reflects years of study, competition, coaching, and practical experience, allowing Ki-Senshi to offer a powerful system that combines discipline, technical precision, athletic performance, adaptability, and strong striking development.
All instructors being bilingual also strengthens the ability to connect with families from different backgrounds with trust and clarity.
Ki-Senshi Chandler:
The Next Chapter of Our LegacyThe opening of Ki-Senshi Martial Arts Chandler represents far more than a second location.
It represents expansion with purpose.
It means bringing years of experience, tested culture, proven leadership, and a strong mission into a new community.
Chandler carries the full legacy built in Tolleson but also represents vision for the future — reaching new families, building new leaders, and continuing to awaken the Warrior Spirit in a wider part of Arizona.
Every student entering Chandler becomes part of a story built through sacrifice, consistency, family, and long-term belief.
This is not simply another martial arts school.
This is a place where lives are shaped, confidence is built, and character is strengthened every day.
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The Mission Continues. Today, Ki-Senshi moves forward with a purpose that has remained unchanged for nearly two decades: to awaken the Warrior Spirit in every student. Whether you are looking for discipline, confidence, or a modern hybrid system that works, your journey starts here.
This is more than a school—it is a community built on resilience. Now, we invite your family to become part of the next chapter of our story.
KI-SENSHI… WARRIORS UP!