Rubén Doblas Gundersen, better known as elrubiusOMG or simply El Rubius, is a Spanish YouTuber whose channel primarily consists of gameplays and vlogs. He has the most subscribers in Spain and was among the top 50 most subscribed-to channels of the platform in the world.
In 2014 he published El Libro Troll (English: The Troll Book). During 2015 and 2017 he published a total of three comics from his Virtual Hero series. He was also part of an anime series based on the comics. A tweet from his official Twitter account in 2016 was once the most retweeted tweet in the world.
In 2016, Time magazine included him in its list of "next generation leaders" and named him an "online conqueror". In 2018, he achieved the world record for live viewers during an online YouTube broadcast for a tournament of the Fortnite video game. He is one of the most popular streamers on Twitch, with the fifth-most-followed Twitch channel in the world.