Ultimate Ninjas
Activities + Classes
Ninja Classes
UN Academy Ninja classes are the perfect way to introduce the littlest of ninjas to the fun of tackling and conquering obstacles! We have several class offerings, ranging from 6 months up to 6 Years .
Our classes range from parent involved beginning movement class all the way through independent skill based obstacle classes. At the Brea Academy we will work with your ninja on developing coordination and strength through skills such as balancing, hanging, jumping, climbing and running, while instilling self-confidence and teamwork in a safe and positive environment.
Kevin Ou
2 weeks ago
We just hosted our son’s 4th birthday party at Ultimate Ninja Academy in Brea and it was outstanding.
The hospitality was top-notch from start to finish. The staff helped us order food, set everything up, and had the details already taken care of — water, juice boxes, cutlery, plates, the works. We didn’t have to scramble or remember extras. They made the whole party feel easy.
The kids had an absolute blast on the obstacles. Every parent there was raving about how well-run it was and how much fun their kids were having. Setup and cleanup were handled so we actually got to enjoy the party instead of working it.
Highly recommend if you’re looking for a stress-free, high-energy birthday spot for little kids. We’ll definitely be back.
The hospitality was top-notch from start to finish. The staff helped us order food, set everything up, and had the details already taken care of — water, juice boxes, cutlery, plates, the works. We didn’t have to scramble or remember extras. They made the whole party feel easy.
The kids had an absolute blast on the obstacles. Every parent there was raving about how well-run it was and how much fun their kids were having. Setup and cleanup were handled so we actually got to enjoy the party instead of working it.
Highly recommend if you’re looking for a stress-free, high-energy birthday spot for little kids. We’ll definitely be back.
Julia Weyand
1 month ago
Phenomenal experience for my 4 year old! Coach Caitlyn is spectacular and very well equipped not only for this age group but to support my kiddo with different developmental and physical needs. I am so thankful to have found this program when I did. They do a great job at offering variety for the weekly classes, each week we come in to different setups that my son can't wait to explore.
Louise McMillan
1 month ago
"An absolute game changer!”
I bring a little girl that I babysit every week to Mini Ninjas. She is a more reserved, cautious child. She started Ninjas off in tears and very clingy. Now, she’s enthusiastic and participates independently. Her balance, fine motor skills, and confidence have soared. The owner and coaches are incredible—they are kind, great with kids, and super encouraging. What I love most about Ninjas is the positive and caring energy I feel when I walk in. The facility is always clean and the decor is fun and motivating.
I just LOVE this place and you will too.
I bring a little girl that I babysit every week to Mini Ninjas. She is a more reserved, cautious child. She started Ninjas off in tears and very clingy. Now, she’s enthusiastic and participates independently. Her balance, fine motor skills, and confidence have soared. The owner and coaches are incredible—they are kind, great with kids, and super encouraging. What I love most about Ninjas is the positive and caring energy I feel when I walk in. The facility is always clean and the decor is fun and motivating.
I just LOVE this place and you will too.
Brianna Smith
1 month ago
My child & I absolutely love it here. We signed up for the weekly classes and the coaches are sooo amazing at what they do, I love the upbeat energy and support shown to each and every kid. The Open Play time is also a definite 10/10 for us, my kid loves to play imaginative games like “the floor is lava!” while making his way through the obstacle courses 😄 it’s been the perfect spot for fun outside of the house while we’ve been trying to beat the heat this summer!
Katy Davis
3 months ago
This is THE spot to bring little ones. Amazing staff, super clean facility, tons of fun for kids. This place makes movement exciting and encourages physical skill building and confidence. You can see it happening in real time and every kid looks so happy to be there.
nitisha agarwal
3 months ago
We recently celebrated my daughter's birthday at Ultimate Ninja Academy in brea, and it was truly one of the most memorable parties we've ever hosted!
From the beautiful decor to the warm hospitality, everything was perfectly organized. The staff went above and beyond to ensure that every detail was taken care of, making the entire experience stress free and enjoyable for us.
The kids had an absolute blast with all the fun activities, and even the parents had a great time. Everyone left with smiles on their faces and wonderful memories to cherish.
A huge thank you to the entire Ultimate Ninja Academy team for making my daughter's special day so amazing. I highly recommend this venue to anyone looking to host a fun, exciting, and unforgettable birthday party for your kid!
From the beautiful decor to the warm hospitality, everything was perfectly organized. The staff went above and beyond to ensure that every detail was taken care of, making the entire experience stress free and enjoyable for us.
The kids had an absolute blast with all the fun activities, and even the parents had a great time. Everyone left with smiles on their faces and wonderful memories to cherish.
A huge thank you to the entire Ultimate Ninja Academy team for making my daughter's special day so amazing. I highly recommend this venue to anyone looking to host a fun, exciting, and unforgettable birthday party for your kid!
Priscilla Munoz
4 months ago
we love this place!! So excited for this new gem in Brea! I highly recommend if you are looking for a fun place for your child to get their energy out while also working on listening skills, balance and more! 5 stars!!
NEXT BIG THING IN SPORTS!
Ninja will make their debut in the 2028 Olympics, and your child has the chance to be part of this growing movement! As this sport continues to gain popularity, our classes offer the perfect introduction to the skills and challenges that could one day lead to your child being a part of the next generation of ninja athletes!
Sign Me UP!
Ninja skills
Help little Ninjas Grow
"Play, learn, grow" isn't just a catchphrase—it's the foundation of everything we do at Ninja Academy Training! Our obstacle course program is designed to nurture the holistic development of young children through active, engaging play.
With our custom-built, tot-sized obstacle courses, your little ones will have a blast as they balance, swing, climb, and build their gross motor skills. But it’s more than just physical development—our classes also support cognitive growth by teaching decision-making and problem-solving skills. Plus, they foster social-emotional development, helping children build resilience and confidence as they overcome each fun challenge!
Strength & Agility
Running, jumping, and climbing through obstacle courses make our little ninjas strong and quick! They have fun while building muscles and learning to move in all directions.
Balance & Body Control
Balancing on beams and navigating obstacles helps kids control their bodies and stay steady. They gain confidence and coordination, which is great for all sports.
Fun & Perseverance
Ninja training is super fun and teaches kids to keep trying, even when things are tough. They learn to never give up and enjoy every moment while making new friends.
Naperville, IL
Kids Birthday Parties
Looking for a fun, active idea for your kids birthday party? An Ultimate Ninjas party might be exactly what you're looking for!
Kids love our obstacles, indoor play areas, and ninja challenges. Our Brea ninja party packages are perfect for a stress-free, fun, and unique party with activities for kids of all ages - even your grown guests can join in the fun! Try out the many ninja obstacles and courses, and enjoy a fun filled screen-free evening.
What's more, your party can enjoy a private party area, with their very own indoor arenas and party room. Preorder pizza and drinks from our awesome, locally owned, pizza partner delivered right to your party!
Planning birthday parties has never been so easy - check out using our online reservations, then sit back and relax.
Kevin Ou
2 weeks ago
We just hosted our son’s 4th birthday party at Ultimate Ninja Academy in Brea and it was outstanding.
The hospitality was top-notch from start to finish. The staff helped us order food, set everything up, and had the details already taken care of — water, juice boxes, cutlery, plates, the works. We didn’t have to scramble or remember extras. They made the whole party feel easy.
The kids had an absolute blast on the obstacles. Every parent there was raving about how well-run it was and how much fun their kids were having. Setup and cleanup were handled so we actually got to enjoy the party instead of working it.
Highly recommend if you’re looking for a stress-free, high-energy birthday spot for little kids. We’ll definitely be back.
The hospitality was top-notch from start to finish. The staff helped us order food, set everything up, and had the details already taken care of — water, juice boxes, cutlery, plates, the works. We didn’t have to scramble or remember extras. They made the whole party feel easy.
The kids had an absolute blast on the obstacles. Every parent there was raving about how well-run it was and how much fun their kids were having. Setup and cleanup were handled so we actually got to enjoy the party instead of working it.
Highly recommend if you’re looking for a stress-free, high-energy birthday spot for little kids. We’ll definitely be back.
Julia Weyand
1 month ago
Phenomenal experience for my 4 year old! Coach Caitlyn is spectacular and very well equipped not only for this age group but to support my kiddo with different developmental and physical needs. I am so thankful to have found this program when I did. They do a great job at offering variety for the weekly classes, each week we come in to different setups that my son can't wait to explore.
Louise McMillan
1 month ago
"An absolute game changer!”
I bring a little girl that I babysit every week to Mini Ninjas. She is a more reserved, cautious child. She started Ninjas off in tears and very clingy. Now, she’s enthusiastic and participates independently. Her balance, fine motor skills, and confidence have soared. The owner and coaches are incredible—they are kind, great with kids, and super encouraging. What I love most about Ninjas is the positive and caring energy I feel when I walk in. The facility is always clean and the decor is fun and motivating.
I just LOVE this place and you will too.
I bring a little girl that I babysit every week to Mini Ninjas. She is a more reserved, cautious child. She started Ninjas off in tears and very clingy. Now, she’s enthusiastic and participates independently. Her balance, fine motor skills, and confidence have soared. The owner and coaches are incredible—they are kind, great with kids, and super encouraging. What I love most about Ninjas is the positive and caring energy I feel when I walk in. The facility is always clean and the decor is fun and motivating.
I just LOVE this place and you will too.
Brianna Smith
1 month ago
My child & I absolutely love it here. We signed up for the weekly classes and the coaches are sooo amazing at what they do, I love the upbeat energy and support shown to each and every kid. The Open Play time is also a definite 10/10 for us, my kid loves to play imaginative games like “the floor is lava!” while making his way through the obstacle courses 😄 it’s been the perfect spot for fun outside of the house while we’ve been trying to beat the heat this summer!
Katy Davis
3 months ago
This is THE spot to bring little ones. Amazing staff, super clean facility, tons of fun for kids. This place makes movement exciting and encourages physical skill building and confidence. You can see it happening in real time and every kid looks so happy to be there.
nitisha agarwal
3 months ago
We recently celebrated my daughter's birthday at Ultimate Ninja Academy in brea, and it was truly one of the most memorable parties we've ever hosted!
From the beautiful decor to the warm hospitality, everything was perfectly organized. The staff went above and beyond to ensure that every detail was taken care of, making the entire experience stress free and enjoyable for us.
The kids had an absolute blast with all the fun activities, and even the parents had a great time. Everyone left with smiles on their faces and wonderful memories to cherish.
A huge thank you to the entire Ultimate Ninja Academy team for making my daughter's special day so amazing. I highly recommend this venue to anyone looking to host a fun, exciting, and unforgettable birthday party for your kid!
From the beautiful decor to the warm hospitality, everything was perfectly organized. The staff went above and beyond to ensure that every detail was taken care of, making the entire experience stress free and enjoyable for us.
The kids had an absolute blast with all the fun activities, and even the parents had a great time. Everyone left with smiles on their faces and wonderful memories to cherish.
A huge thank you to the entire Ultimate Ninja Academy team for making my daughter's special day so amazing. I highly recommend this venue to anyone looking to host a fun, exciting, and unforgettable birthday party for your kid!
Priscilla Munoz
4 months ago
we love this place!! So excited for this new gem in Brea! I highly recommend if you are looking for a fun place for your child to get their energy out while also working on listening skills, balance and more! 5 stars!!
Open Play
Looking for something active, fun, and safe to do with your kids? How about an exciting, challenging evening of Ninja fun - a unique combination of exercise, agility training, and strength building all while gaining confidence in a fun, safe environment.
Check out our open play days! Your local Brea Ultimate Ninjas Academy provides a fun and challenging way to help your kids get out all of their energy while tackling our obstacle and agility courses!
Practice and play on a variety of obstacles, fine tune your skills on a single obstacle, or practice running our customizable courses.
We inspire Little Ninjas
to grow up to be GREAT ninjas!
- Little Ninjas are kind - FRIENDSHIP.
- Little Ninjas are great listeners - RESPECT.
- Little Ninjas cheer (loud!) for their friends - SUPPORT.
- Little Ninjas help their friends - TEAMWORK.
- Be YOU - TRUTH.
- Little Ninjas HAVE FUN!!!!
stay in the know!
Join our active ninja community for timely information, updates, and information about specials, events, and more!Contact
academy hours
- Mon-Thurs
9:30 AM - 6:20 PM
- Fri
9:30 AM - 5:30 PM
- Sat - Sun
9:30 AM -12:30 PM
Party Schedule
- Sat - Sun
1:00 PM - 6:00 PM
