Alvin Aguilar is the first and only son of his father Arthur Aguilar and his mother Madeleine Aguilar. He has one sibling, Alexandrine Ann Aguilar. Growing up, Alvin was considered by his parents, teachers and peers as a very hyperactive child. He was very athletic so his parents were forced to keep him immersed in various extra-curricular activities just to keep him busy. At the early age of nine he began to show much interest in martial arts, an interest that both his parents supported all the way. His father would even drive him around as he explored different gyms and systems. He had an early exposure to Arnis through his father and later on he learned Shotokan Karate, and Greco-Roman Wrestling throughout the 80s.
He earned his college degree in Behavioral Science at De La Salle University Where he went on to become the leader of his fraternity (Tau Gamma Phi.) His involvement in fraternity violence rapidly increased and so did his thirst to seek out the most effective forms of combat. He would later join a group called Sari-An, or Sariling Pamamaraan, a martial arts group founded in the 1980s that was geared towards street fighting under the tutelage of the system’s originator Robert Cousart. He also started training his Sticks and Knife Fighting skills with Sixto Carlos of Carlos Hermanos and with Leo Gaje of Pekiti Tirsia Kali. His pursuit of martial arts excellence is guided by three main principles: authenticity, credibility, and combat effectivity.
Starting his Gracie Jiu-jitsu training at the Gracie Academy in Los Angeles, California in 1993, he became one of three existing certified International training representatives to the Gracie Association. The other two come from Nassau, Bahamas and Canada. In 2006, he was promoted to black belt by Brazilian Black Belt Kazeka Muniz.  In 2009, he became a member of Gracie Humaita under Royler Gracie. He now trains under Saulo Ribeiro of Ribeiro Jiu Jitsu. In May, 2010, he was promoted to 1st degree black belt by Royler Gracie.
Aguilar is a decorated fighter and grappler. He is a 3-time Undefeated Fighter, Sari-An Annual Sparing Meet, and he won in many underground fights. His first notable accomplishment was winning silver in 1999 Gracie Jiu-Jitsu Tournament at Detroit Michigan, United States. Four years after earning the title as the first Filipino BJJ black belt in 2006, Aguilar achieved the record for being the first homegrown Filipino BJJ black belt to win in Mundials. In the same year, Aguilar competed in the Philippine Wrestling National Open where he recorded the fastest pin (17 seconds) in Philippine wrestling history. He settled with a silver in the competition. In September 2016, he won gold in Asian Jiu-Jitsu Championship at Tokyo, Japan
In his younger days, he was known to roam bars in Manila looking for fights in bars or clubs in order to test his fighting skills. He has been involved in numerous street fights including a case involving fraternity violence through which he was expelled by the administrators of De La Salle University due to injuries inflicted on a member of a rival fraternity. He filed a lawsuit against the university and the court eventually ruled in his favor.
In 2003, he fell victim of a drive-by shooting in front of Olive Bar in Makati Ave, the gunman opened fire at Emiliano Familar and Aguilar. Familar was pronounced dead on arrival while Aguilar survived three M16 bullet shots with 2 exit wounds and 1 bullet still lodged near his spine to this day.
URCC promoter Alvin Aguilar chokes out fighter for attacking the referee during the event at his own promotion, URCC Baguio 3: Invasion. This incident remains the only time a promoter took physical action against a competitor, in defence to the referee being attacked by the fighter.
In the year 1996, Aguilar formed DEFTAC Philippines a Mixed Martial Arts and Brazilian Jiu-Jitsu Team. Under Aguilar's complete and direct guidance, DEFTAC has trained and produced martial arts champions in BJJ, MMA, Muay Thai, Wrestling and FMA including first Filipino World BJJ Gold Medalist: Maybelline Masuda, National and International MMA and BJJ Champions: Andrew Laxa, Justin Ceriola, Marcus Valda, Richard Lasprilla, Allan Co, Fritz Rodriguez, Louie Sanggalang, Ali Khatibi and Red Romero.
In October 2008, Aguilar opened an MMA school, the B.A.M.F. Mixed Martial Arts Center. His MMA gym, located in Paranaque, Philippines, offers instruction in Mixed Martial Arts, Brazilian Jiu Jitsu, Muay Thai, Wrestling and Boxing. Professional fighters like Royce Gracie, Saulo Ribeiro, and Mauricio "Tinguinha" Mariano have conducted seminars at the center.
Alvin has three children (Liam, Lucas, and Lucho) with his ex-wife, former URCC marketing director, Bubbles Bermudez. He's currently running his businesses (BAMF MMA Center, URCC, Deftac) with his partner, BJJ brown belt phenom and first Filipina BJJ Worlds (Mundials) Gold Medalist, Maybelline Masuda.