There are more than one bands with this name

1) Wretched was a hardcore band from Milan, Italy. Along with other bands such as Indigesti, Raw Power, Negazione, and Declino, they formed the basis of the hardcore scene in Italy during the 1980's. Their music was usually fast-paced with violent and dark lyrics.

2) another Wretched is a traditional doom metal band from Maryland, USA, playing the typical riffing doom which is so prominent for the area. They released three albums in the early nineties through Hellhound Records before breaking up in 1996. In 2004 they reunited.

3) A horror Metal band from Aachen on the Western edge of Germany that plays music in the tradition of Alice Cooper and (recently) Lordi.
Wretched consists of Ann T Christ (bass, vocals), BOB (guitars) and Locke (drums).

4) Death Metal / Metalcore band from Charlotte NC, signed to Victory Records. Originally named "And Since Forgotten", formed in 2005. Current vocalist was in another Charlotte NC band, "Chyme", and Steven likes such metal bands as Emery and Dredg.