No hun not really....Cole is actually the dope of my older ones, but I had to wake him up and made him jump, so he had a hissy fit, he dint strike or nothing, just warned me off this way.
I only have 2 real stroppy ones, 1 being Kaine but we have just got him at 3 yrs old and not sure what hes been thru but he hates my other half with a vengeance, and ashen who is 9 months old, and was in a state when we got him, but is starting to chill now.
My Syphon's a complete darling and has only hissed once - moved her to change her water and didn't realise she was blue.
When I got Savvy I was warned that she'd not been handled much as she was a bit mean and bitey... so when she hissed the first time I went near her I panicked and left her until the next day. When she hissed the next day too I decided that she wasn't going to boss me, so fetched gloves and picked her up anyway. She was fine, just a little twitchy and nervous. She's never (yet) struck at me, and only hisses very rarely now.
Like any animal they just have to learn that you're not a threat!