The album's working title was Spiritual Disease. The release was preceded by the single "Beware the Beast", which was released on August 25, 2004. The album was nominated for a Fryderyk Award in the category 'Metal Album of the Year (Album roku metal)'. Two music videos have been made for the songs "Dark Transmission" and "Choices", which were directed by Wojciech Głodek. Video clips were shot at RG Studio while recording the album. In Poland, The Beast landed at position No. 8, and dropped out five weeks later. The album also charted in Japan.
The album was recorded between May and June 2004 at RG Studio in Gdańsk, Poland, and was produced by Piotr Wiwczarek. The album was mastered by Jacek Gawłowski at JG Lab Studio in Warsaw, Poland. Originally, drum sessions took place at Hertz Studio in Białystok in February 2004 with drummer Krzysztof "Doc" Raczkowski, however, Raczkowski fell down a flight of stairs, causing arm and leg injuries. Because of the accident, the studio sessions was postponed. Ultimately, the band decided to hire Vesania drummer Dariusz "Daray" Brzozowski as a session musician. Piotr "Peter" Wiwczarek talked about the accident while working on the album, saying:
[...]factor that was pretty important was The Beast was the first album without Doc drumming on it. Believe me, if Doc had been on the record (and he was supposed to be, as we had started recording it when he fell and broke his hand, basically because he was drunk, which was one of the reasons we decided he had to quit the band), it wouldn't have been such a big drama around it. First, I tried to make The Beast more melodic compared to the previous one, Revelations. And then we had a new guy (Daray) replacing one the most important persons in the band (Doc), who created Vader and its songs since the beginning.
Beware the Beast is the fifth single by the Polishdeath metal band Vader. It was released only in Poland on August 24, 2004 by Empire Records. The release features two songs "Dark Transmission (333.version)", "Stranger in the Mirror", studio report, and music video for "Dark Transmission".
The studio report consists walk through the main recording process of The Beast album, interview with band members, and studio engineer Piotr Łukaszewski. Marcin "Novy" Nowak despite being shown in video did not record any off bass lines which were handled by Piotr "Peter" Wiwczarek.