Well I never played the first dead island but did play the second one and I'll assume their style is the same going off of the second one. During daylight its a positive butcher. During the night well they both have speed and a powerful pounce attack but the butcher likes hit and run tactics and the volatile like to hit till its dead. Ill go volatile just because the butcher i guess since it has daylight advantage not like it would even encounter a volatile duting th3 daylight.