His true name is Aljur Mikael Guiang Abrenica. Abrenica was raised in Angeles City, Pampanga and attended Don Bosco Academy in high school. In 2006, he joined reality-based talent search show, StarStruck, where he won the "Ultimate Hunk" title. As of September 1, 2007, Aljur Abrenica signed as a contract artist for Regal Films. Aljur Abrenica played Cervano/Zaido in Zaido: Pulis Pangkalawakan. He has also appeared in Zaido, Dyesebel and Boys Nxt Door, Luna Mystica and SOP Rules. He is also named Yes Magazine's Next Big Male Star.
Abrenica played Miguelito "Lito" Sanchez in the afternoon drama, Dapat Ka Bang Mahali?. He also starred in the film Nandito Ako...Nagmamahal Sa'Yo, a film produced by Regal Films.
He appeared in All My Life in 2009 and in the television series The Last Prince in January 2010, which was followed by his first solo project Illumina last October 2010, then followed his second solo project, Machete in 2011.
Aljur and partner with Biana King joined in a GMA Christmas Reality show, Puso Ng Pasko: Artista Challenge last December 2010.