Lars Alexandersson is one of the main characters of the Tekken series since his first introduction in Tekken 6: Bloodline Rebellion and is the main protagonist of that game and later one of the main protagonists in Tekken 7. Lars' tagline is "the one who betrayed his own in order to build a new era".
As the Mishima Zaibatsu waged war on the world, G Corporation, led by Kazuya Mishima, rose from titanic to power and was their main opposition, leading to worldwide conflict. Meanwhile, the Zaibatsu's former Tekken Force soldiers began a coup d'etat against the Mishima Zaibatsu. The mastermind behind this coup d'etat was Lars Alexandersson, a young and charismatic Tekken Force officer with incredible physical ability and intellect. Most importantly, he is the illegitimate son of Heihachi Mishima, and with the exception of Lars, no one, not even Heihachi, is aware of this piece of information. Lars's goal is to bring peace by defeating his half-nephew, Jin Kazama.
A former officer of the Mishima Zaibatsu's special military unit, the Tekken Force, Lars enacted a coup d'état and rebelled against his former employer.
Lars continues to fight despite the loss of his fallen comrades, and his bloody rebellion is nowhere near finished.
And he is reprised by Zach Hanks in the English dub and Junichi Suwabe in the Japanese dub.