[8] In 2018, he achieved the world record for live viewers during an online YouTube broadcast for a tournament of the Fortnite video game.

[12] When he was three years old, his parents divorced; he and his mother moved to Bergen, where she became a partner with another Spanish person named Héctor, to whom Rubius often refers as "The Godfather" in his videos.

His first console was an SNES, to which he admitted that it was essential to develop his love for video games and geek culture and that if it hadn't been for that he would never have reached where he was.

[18] In January 2012, despite the growing popularity of his videos, he announced that he would change his channel because the one he had at that time could not be associated with a contract with Machinima Network, Inc.

[19] On 14 March 2012, he uploaded a parody of Chayanne's song "Torero", where he modified its title and lyrics to "Minero", alluding to the Minecraft video game.

On 27 April 2012, the channel reached 100,000 subscribers, which Rubius celebrated by streaming on YouTube, answering questions from his followers.

Rubius and Mangel announced that both would move to live together in Madrid when they got a contract with a production company called BGames.

[29] In January 2013, he started another segment called "Meet The Rubius" (alluding to a popular video game series Team Fortress 2 on YouTube).

Rubius couldn't suppress his tears after telling Mejide that he was suffering from depression due to the burden of fame and being away from his family.

[55] In April, Rubius participated in the Colombian edition of the Club Media Fest, where he made a presentation mixing live electronic music,[56] received the "Youtuber of the Year" award at the 1st Play Awards ceremony held in Palma de Mallorca,[57][58][59] and in April 2016 he uploaded a music video titled "Pokemon HEYEYEYEAH" with Narehop, a parody of What's Up?

[69][70] A couple of weeks later, he uploaded another video denouncing a new magazine dedicated to gossip about YouTubers that had leaked photos of himself and his partner on their vacations, declaring "I can't believe how this shit of continuing to invade people's privacy is still legal in the middle of 2016".

[81] The plot follows the adventures of Rubius, who must free the 100 best gamers of Trollmask, a vengeful enemy, in a virtual world.

[83] In March 2018, El Rubius broke his world record during a live broadcast of Fortnite, having more than a million viewers tuning in[84] and 100 Spanish-speaking streamers.

[86][87] On 25 May he announced that he would withdraw from YouTube for a time due to the fact that in the previous months he began to feel stress, anxious and nervous when recording videos and doing live shows.

[96][97] It is directed by Alexis Barroso, illustrated by Lolita Aldea, written by Juan Torres, and based on Rubius' eponymous comic.

[98] After his return, Rubius announced that he would start directing on Twitch and prioritise that platform over YouTube, which he would take more as a secondary job.

In July, he uploaded a teaser on Twitter where he was going to make an announcement in response to various rumors about the renewal of his contract with Amazon.

[104][105] Watch Dogs: Legion, a video game developed by Ubisoft and released on 29 October 2020, has El Rubius as a playable character.

[109][110] Rubius also participated in another promotion with Sony to announce his new ninth-generation video game console the PlayStation 5, along with other YouTubers and popular people from Spain such as Josep Pedrerol, Michelle Jenner, Santiago Segura, Joaquín Reyes, David Broncano, Koke, Carolina Marín, Amaya Valdemoro, Marc Gasol, etc.

On 23 December he performed the promised opening and the livestream reached 350,000 viewers, achieving the fifth most viewed Spanish-speaking broadcast.

[113][114] On 2 January Rubius announced via Twitter that, together with Alexby11, they created a Rust series called Egoland that brought together 70 streamers.

[115] In October 2021, he announced that he would be part of the movie Uncharted, posting a photo on social media with actor Tom Holland.

[117][118] The content of El Rubius' channels are primarily gameplays, sketches, vlogs, and montages, mostly related to video games, with the particularity that they are made with humour, satire, and sarcasm.

Unlike other television personalities or content creators, he does not play a character, but only shows himself naturally, leading to greater acceptance from the masses.

Rubius offered a change of fresh air, with a more dynamic and more edited content, in addition to performing it with acid, black, absurd, and surreal humour.

[120][121] GQ magazine described him as "the throbbing incarnation of a generation gap", in addition to commenting: "His videos encapsulate a high school mentality that we would never, ever think would be legitimized within such a massive platform.

That has been his true triumph: turning something as fleeting as adolescent immaturity, or the clumsy search for identity through the outburst or bullshit, into pure spectacle".

[122] The New York Times wrote that "in the videos it is always clear that he lives between two dimensions, that of the screen with its massive audience and that of his room (in a hotel when he travels), his cat and his friends.

This caused controversy in social networks since several YouTubers and streamers had taken this initiative due to the lower tax burden in that country.

The former second deputy Prime Minister of the government of Spain Pablo Iglesias criticised this decision through his Twitter account, retweeting a tweet where former athlete Juanma López Iturriaga explained that YouTubers moved to avoid paying taxes.