" Doblas was born in the Spanish town of in 1990 to a father and a mother. During his childhood he moved many times to , due to his parents' divorce. He speaks fluent Norwegian, the specifically, English and Spanish. When he definitively settled in he studied animation and 3D modelling.

He posted his first video on YouTube in 2006 and has devoted himself exclusively to his YouTube channel since 2011. In 2014, he made a cameo appearance in the Spanish film ,starred and directed by . "

" El Rubius has two channels: elrubius and ElRubiusOMG. His first channel "elrubius" was created on April 3, 2006. His second channel "elrubiusOMG" was created on December 19, 2011 because he could not become a YouTube partner on his first channel due to a strike.

Although his channels are focused on gameplays, El Rubius also posts , , answers fan questions and does , among others.

In 2011, his channel started becoming popular in the . He gained many subscribers when he posted a gameplay of . He later published videos of him on the website, which gained him an even larger following.

He became the most subscribed Spanish channel in November 2012, after overtaking the YouTuber . In February 2013, he reached 1 million subscribers and two years later, in February 2015, he became the first Spanish YouTuber whose channel reached 10 million subscribers. Therefore, in October 2015, he got the Diamond Play Button at the YouTube 10th Anniversary Party in .

El Rubius has made appearances in the 2015 and 2016 editions of .

On March 25, 2018 ElrubiusOMG broke and 's record for most concurrent viewers during a stream and the record for most concurrent viewers on a YouTube Gaming livestream with 1.1 million people tuning in. The tournament consisted of 99 other Spanish-speaking streamers who all broadcast the game to their own audiences, all together the Battle Royale tournament had over 42M live views.

On May 25, 2018 El Rubius said he needs to take a break during months from YouTube because of and . He returned four months later, on 30 September 2018. "