There are many artists who have used this name: 1) Argentinian stoner rock band. They released one free album in 2011 called Todo El Odio Del Unicornio, drawing influences from Kyuss to Los Natas to Ahkmed to Viaje a 800.
This band plays pure no-nonsense Stoner Rock. Their debut album called Todo El Odio Del Unicornio is an awesome piece of work.
It is clear that the music of Samurai is inspired by bands like Kyuss and Los Natas.