I don't know who that is but that is sad.
Butch's tattoo is a scorpion. I thought about Spike often teasing Butch for being "ugly" which prompts Butch to punch him. Butch hasn't shown his teeth yet but I imagine them to be semi-crooked and he is missing one.
Tetherby is indeed an arrogant jerk but he only deserves to get hurt badly like in here. http://theloudhouse.wikia.com/wiki/User_blog:DPSII/Gang_Meets_the_Gang