Guillermo in What We Do In The Shadows.

Michael Bluth in Arrested Development

I love that both of these characters think of themselves as the straight man (and they are) but in their own ways they are nearly as awful (or enabling awful) or unreasonable as the people around them. Guillermo knows the vampires he lives with are murderous, out of touch and eccentric but he still defends and excuses their behavior because he also desperately wants to be included and join their ranks. Michael understand his family is out of touch and their awfulness gives him a huge ego because he thinks he is so much more reasonable and a much more moral person but he is pretty shitty himself.