Leijurv is one of the developers of Impact Client, a free cheat client, one of the most widely used among 2b2t players, and the lead developer of baritone, a pathfinding system for minecraft (github).
He is also smart and incredibly good looking. Also is famous for his obsession with toes and really cute cats.
He is also the one behind the bots that made The Masonic Eclipse a reality.
YouTube channel (warning: contains front and center videos of toenail corners being ripped off)
Brief history on 2b2t
Leijurv was exposed to 2b2t because it was the perfect environment to test Baritone bots on. From here, he would upload progress updates onto his YouTube channel to inform the community about changes and upcoming features.
Eventually, Leijurv started to join different 2b2t related discords such as the Vortex Coalition, which he would meme around extensively with. One of the more advanced memes was created a Baritone network to help The Vortex Coalition sell items, and regulate prices based on supply and demand. There were even plans for trading futures.
In early 2019, he hopped into a call with HermeticLock, and 24 hours later, they met up with each other in person. This friendship was very beneficial to HermeticLock, as Leijurv would teach him advanced computer science concepts such as how to grab the last index of an array. This meetup also lead to Leijurv joining the SpawnMasons, where, as of July 2020, he serves as Worshipful.
During the mapping of Spawn project, Leijurv created some custom software to help map out entire areas of chunks. This added help was incredibly beneficial for the project and is one of the reasons the full 100k download of spawn has become available to the public.