My dark side is a tough switch to flick but, if you somehow manage to piss me off enough or I'm just having a bad day I can go two ways:
1. Calm, collected and cruel, get in my way at this point and i'll pick you apart mentally and if needs be physically. My thoughts while i'm like this tend to be very dark, deep and usually about the destruction of something.
2. Just really, really angry, usually just if someone pisses me off but, I just get mindless and brutal, every action usually heavy-handed and clumsy. (I don't like getting like this and I have learnt to control myself but, it's sometimes inevitable.)
Needless to say i'm a really nice, innocent person most of the time and you have nothing to fear from me as long as you don't anger me. ^^