There are multiple artists with this name:

1) Ghoul is a thrash/deathgrind band from Oakland, California. Since forming in 2001, they have released 4 full-lengths, 2 EPs, and also contributed to two splits. Their music will most likely appeal to fans of bands along the lines Impaled, Exhumed, Carcass, Impetigo, Frightmare, Blood Freak, General Surgery, & Haemorrhage.

Bandcamp: http://maniaxe.bandcamp.com/
Official Website: www.creepsylvania.com
Facebook: https://www.facebook.com/GhoulunaticsAsylum

2) Ghoul was an experimental electronic band from Sydney, Australia.
http://www.myspace.com/ghoulsydney

3) Ghoul was a legendary punk/hardcore band from Japan. Please change your tags to ＧＨＯＵＬ for this specific band. Ghoul formed in the mid 80's and were active until their front man Masami formed another band called Sqwad in early 90s, and soon after that he died.

4) Ghoul was an underground Black Metal band from the UK. The band members Unknown and Mefisto together recorded a series of black metal demos and live performances of dark ambient/noise which achieved cult status amongst fans. The band split up in 2007.

5) Ghoul is a Black Metal band from Osaka, Japan.

6) Ghoul is a Thrash Metal band from Maryland, USA.

7) Ghoul is a blackened death Metal band from Italy.

8) Ghoul is a Drone/Doom Metal band from New Zealand.

9) Ghoul was an 80's german gothic rock band with one 7inch vinyl. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.