With all the other hm's I either like, dislike, and there's one I'm neutral about atm. With Callum it's different. I won't be joining but it's not because i have an intense dislike for him as I don't have an intense like for him either. I just view him as one of the strangest characters to have been put in BB since I've been watching - have only missed one season.
I find him fascinating to observe, his facial contortions that convey so many emotions, especially anger that he tries to suppress at times by biting the inside of his cheek and narrowing his mouth. He seems to have a need to feel needed, a need to feel superior to Dexter even though he accuses Dexter of acting superior to him. Don't think I've ever seen such hate from one hm to another than his for Dexter. One thing I constantly come back to though is his eyes. I've always been fascinated by eyes as they can say so much about a person that can't be hidden whether it's good bad or indifferent. Such a dark intensity, they're so deep set as to want to hide from scrutiny the basic character of the person, I've observed it before with certain types of characters and I'm always reminded of birds of prey. Just a few of my thoughts and personal observations......other opinions/observations are available. lol.