Krister Dreyer (born 11 September 1974 in Sandefjord, Norway), commonly known as Morfeus, is a Norwegian musician, singer, songwriter and multi-instrumentalist.

Morfeus is noted for his work in several bands in Norway, including Mayhem, Limbonic Art, Dimension F3H and Viper Solfa.

(as Mr. Morfeus): (as Morfeus):