Sixx is a side project of early American black metal band Von. Besides having the same members, there's not a lot of similarities between the two. There's still the repetition and creepy spoken word between songs like the Von demos but Sixx is Goth/Deathrock all the way. Sister Devil was originally released as a demo tape in 1991 in a minuscule amount of 100 copies and was the only recordings the band made. They sound like a mish mash of Sisters Of Mercy, Misfits and early Christian Death so if you like the sound of that you'd best check them out. You can buy this 12" repress from NWN Productions.