“To Mega Therion” is the third studio album by the Greek heavy metal band Rotting Christ, released in 1990. The title translates to “The Great Beast” in English, referencing the occult themes present in the album. It features a blend of black metal and traditional heavy metal elements, showcasing the band's unique sound and lyrical depth. The album is notable for its incorporation of various musical influences, including Greek folk music and classical music elements. It received critical acclaim for its innovative approach and has since become a significant work in the black metal genre, influencing many subsequent bands.