Masio Fullen is a name that resonates deeply within the Latin American MMA community. As one of the original cast members of The Ultimate Fighter: Latin America, “El Lobo” helped pave the way for Mexican fighters in the world’s premier organization, the UFC.
Even though his time in the octagon has passed, his legacy continues in regional promotions like Lux Fight League, where he has held championship gold. Fans often wonder about his financial standing after years of grinding in the sport.
In this article, you will know Masio Fullen’s Net worth, career earnings, career overview, stats, relationship, and more.
Masio Fullen’s Biography
| Category | Details |
|---|---|
| Full Name | Leonardo Masio Fullen |
| Nickname | El Lobo (The Wolf) |
| Date of Birth | September 11, 1987 |
| Age | 38 Years Old |
| Nationality | Mexican |
| Hometown | Guadalajara, Jalisco, Mexico |
| Height | 5 ft 10 in (1.78 m) |
| Weight | 145 lbs (Featherweight) |
| Turned Pro | 2007 |
| Net Worth | $250,000 – $500,000 (Estimated) |
| Career Earnings | ~$50,000+ (UFC Disclosed Only) |
| Wife/Girlfriend | N/A |
| Instagram Profile | @masiofullenmma |
Early Career
Masio Fullen began his martial arts journey in Guadalajara, Mexico, a city with a rich boxing tradition but a developing MMA scene at the time. He started training in boxing and Taekwondo before eventually finding his passion for mixed martial arts.
Unlike many modern fighters who have access to high-level gyms from day one, Fullen came up through the “old school” Mexican circuit, fighting in local promotions where toughness was the primary requirement.
He built his reputation in regional organizations like Black Fighting Championships and Xtreme Kombat. His early record was impressive, racking up victories through a mix of striking and submissions.
This success on the local scene earned him a spot on the first season of The Ultimate Fighter: Latin America in 2014. Being selected for Team Velasquez was a major milestone, as it allowed him to train at the American Kickboxing Academy (AKA) in San Jose, California, alongside legends like Cain Velasquez and Daniel Cormier.
Professional Career
Fullen’s professional career hit its peak visibility when he made his official UFC debut at UFC 184 in February 2015.
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Fighting in Los Angeles, he faced fellow TUF castmate Alexander Torres. Fullen showcased his improved striking and grappling defense to win a split decision, marking a historic moment for his career. However, the level of competition in the UFC was steep.
In his subsequent fights, he faced tough losses against Makwan Amirkhani via submission and Alex Caceres via decision, leading to his release from the promotion in 2016.
Refusing to let his release define him, Masio returned to the regional circuit with renewed focus. He became a staple of the Lux Fight League, one of the most respected promotions in Latin America.
In Lux, he achieved championship status, capturing the Featherweight title and defending it in high-stakes bouts. One of his most notable late-career fights was against rising star Diego Lopes in 2021, a battle that, despite ending in a loss, proved Fullen was still competing at an elite regional level.
By 2025, Fullen remains a respected veteran and mentor figure in Mexican MMA.
Masio Fullen’s Net Worth Details
As of 2026, Masio Fullen has an estimated net worth between $250,000 and $500,000. This wealth comes from a combination of his fight purses, coaching income, and local sponsorships.
Fight Purses
| Event | Opponent | Result | Estimated Payout |
|---|---|---|---|
| UFC 184 | Alexander Torres | Win | $16,000 ($8k show + $8k win) |
| UFC Fight Night 69 | Makwan Amirkhani | Loss | $10,000 – $12,000 |
| UFC on Fox 18 | Alex Caceres | Loss | $12,000 + $2,500 (Reebok pay) |
| Lux Fight League | Various (Avg.) | — | ~$2,000 – $5,000 per fight |
Career Earnings
| Year | Activity Level | Est. Earnings |
|---|---|---|
| 2015 | UFC (Active) | ~$28,000 |
| 2016 | UFC/Regional | ~$15,000 |
| 2019-2021 | Lux Fight League | ~$10,000 – $15,000 |
| 2024-2025 | Coaching/Seminars | ~$30,000+ (Est.) |
Career Stats
| Stat Category | Record |
|---|---|
| Professional Record | 14–10–0 (Approx.) |
| Wins by KO/TKO | 6 |
| Wins by Submission | 5 |
| Wins by Decision | 3 |
| Losses by Submission | 3 |
| Key Titles | Lux Fight League Featherweight Champion |
FAQs
1. Was Masio Fullen in the UFC?
Yes, Masio Fullen competed in the UFC. He was a cast member on The Ultimate Fighter: Latin America (Season 1) and fought officially for the promotion three times between 2015 and 2016.
2. What is Masio Fullen’s nickname?
His nickname is “El Lobo,” which translates to “The Wolf” in English. This name reflects his aggressive fighting style and his pack-like loyalty to his team.
3. Who did Masio Fullen beat in the UFC?
Masio Fullen defeated Alexander Torres at UFC 184 in February 2015. He won the fight via split decision, earning his only official victory in the UFC octagon.
4. Is Masio Fullen still fighting?
While his activity has slowed down significantly compared to his prime, he remains connected to the sport. He is largely focused on coaching and mentoring the next generation of Mexican fighters, though he has not officially announced a permanent retirement from all competition.
5. What weight class is Masio Fullen?
Masio Fullen primarily competed in the Featherweight division (145 lbs). He has spent the majority of his career, including his time in the UFC and Lux Fight League, at this weight.
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