Justin "JC" Caylen (born Justin Caylen Castillo ; September 11, 1992) is an American YouTube personality from San Antonio, Texas. Over his six years on YouTube, Caylen has amassed over 90 million subscribers across his various channels, as well as more than 400 million views on his videos. Known for kissing fellow working members of his past channel O2L, at the moment is settled down with long term best friend Kian Lawley.
JC Caylen was born in Houston, Texas . His parents divorced when he was very young. His parents divorced when he was very young.
Caylen began his career on YouTube, uploading his first public video to his channel, Life with Jc, in 2010. Caylen also gained exposure due to the YouTube supergroup Our2ndLife where he, Connor Franta, Ricky Dillon, Kian Lawley, Trevor Moran and Sam Pottorff went on an international tour and amassed a total 2.7 million subscribers before the group broke up in December 2014. 
In 2015, Caylen's compilation album Neptones hit number one on the Top Dance/rap Albums chart, according to Billboard Magazine , the album was from Heard Well, a record label started by YouTube user Connor Franta, CAA new Agent Andrew Graham and entrepreneur Jeremy Wineberg. 
In addition to his YouTube career, Caylen also has appeared as an actor in several films and television series. In an interview with AOL, Caylen stated about his YouTube presence affecting his acting career, saying "I'd say that it's impacted my career so much because people see my personality on YouTube and they want to work with me more. It's almost like a video resume because I have my own personality on YouTube and since I don't play a character, they can see who I am and what I'm about. I feel like they know me on a personal level and know what I will be like to work with."  Caylen played Mikey in the 2016 Tyler Perry comedy Boo! A Madea Halloween ,  and its 2017 sequel, Boo 2! A Madea Halloween .
Caylen was born on September 11, 1992 in Houston. He and his family moved to San Antonio, Texas, where he grew up. He has three siblings, named Jaylyn, Ava Grace and Joe Felix. His parents divorced when he was very young. Caylen attended high school at Sandra Day O'Connor High School in Helotes, Texas. 
His dog Wishbone is frequently featured in our2ndlife videos. 
He briefly dated fellow YouTube personality Lia Marie Johnson.
|2017||Apologies In Advance with Andrea Russett||Himself||Fullscreen series|
|2017||H8ters||Himself / Zweeb||Fullscreen series|
|2016||Fight of the Living Dead: Experiment 88||Himself|
|2016||The YouTube Killer||Himself||Short|
|2016||Making Moves||Himself||Guest appearance|
|2014||Teen Wolf||Unnamed Background Character||Season 3 Episode 14 "More Bad Than good"|
|2017||Boo 2! A Madea Halloween||Mikey|
|2017||Party Boat||Officer Hicks||Crackle Film|
|2016||Boo! A Madea Halloween||Mikey|