A few great bands similar to these guys are Creature Feature (just not as heavy, but with the same creep-tastic themes- I SERIOUSLY suggest them :D), Stolen Babies, Tub Ring, Zombina And The Skeletones, The Creepshow (more psychobilly/gothabilly but still fun! :D), and any sort of horror punk band you can find :) There's a lot of great music just like these guys, if not close :D hope that helps you!!
Abominations may be one of the best albums I have ever heard. Creepy yet fun. Heavy yet melodic. Punk yet metal. Operatic yet rough. Epic yet short. Crazy time signatures yet insanely catchy. It totally defies traditional description in how off the charts awesome it truly is. Plus, it is a concept album so it flows beautifully from one song to the next. Amazing. A true shame that they broke up. So much potential.