
An ultra-rare fight. An unstoppable kid.
Fightfor Felix
Felix is fighting an ultra-rare mitochondrial disease. We're making sure he doesn't fight it alone.
Meet Felix
He is four years old. He is stubborn about the important things, generous with his laugh, and completely obsessed with anything that has wheels. He is also so much more than a diagnosis.
A whole personality in a small body
[FAMILY-APPROVED: Share who Felix is outside of his diagnosis — what makes him laugh, the things he loves, the wheels he's obsessed with, the personality that fills a room.]

COX20-related mitochondrial complex IV deficiency
Felix has COX20-related mitochondrial complex IV deficiency, an ultra-rare genetic disorder affecting the mitochondria's ability to produce energy.
Fewer than 40
cases have been documented in medical literature.
Ordinary days that take extraordinary effort
[FAMILY-APPROVED: Describe what daily life requires and what the family needs support for — therapies, specialized care, mobility equipment, accessibility, and everyday needs.]


What we're fighting for
Every dollar helps Felix fight
Support goes directly toward the things that give Felix the fullest, freest life possible, and give his family room to breathe.
- 01
Care
Specialized medical care and treatment from the people who understand Felix best.
- 02
Therapy
Giving Felix every opportunity to grow, learn, and thrive on his own terms.
- 03
Mobility
Equipment and accessibility that give Felix greater freedom and independence.
- 04
Support
Resources that improve Felix's daily life and help his family care for him.
- 05
The Future
Supporting Felix today while we hope, and fight, for better treatments tomorrow.
In Felix's corner
Put something in Felix's corner today
Your support helps Felix's family put more resources toward his care, therapy, equipment, accessibility, and everyday needs.
Donations powered by SupportNow
Wear the fight
Shop for Felix
Proceeds from Fight for Felix merchandise support Felix and his family. Every tee, hoodie, and hat brings another person into Felix's corner.

Mighty Mito — Fight for Felix Tee
$35Wear the fight. Stand in Felix’s corner. The Mighty Mito Tee was created to raise awareness for Felix and his fight with COX20-related mitochondrial disease—an ultra-rare genetic condition with fewer than 40 cases documented in medical literature. The front features our Mighty Mito character for mitochondrial disease awareness. On the back, FIGHT FOR FELIX and a scannable QR code give anyone who sees it a direct way to learn about Felix and support his fight. Proceeds from every shirt support Felix and his family. Details * Unisex fit * 100% combed and ring-spun cotton* * Soft, lightweight feel * Pre-shrunk fabric * Front + back print * Designed for Fight for Felix Wear it for Felix. Share his story. Help put more people in his corner.
Proceeds from Fight for Felix merchandise support Felix and his family.

One kid. A whole lot of people in his corner.
Fight for Felix
He didn't choose this fight. But he doesn't have to face it alone. Stand in Felix's corner today.