He fucked up Karlach's life, this is enough to put him on the very bottom of my trash-tier list.
Not only that, he's ridiculous as a 'villain'.
Orin and Ketheric were more believable and scarier than him.
I mean people are horny for the spider guy

- are you really surprised here?
As for how Gortash looks: I'm actually glad, they didn't make him a pretty boy-
between nursing a depressed general and trying to keep that psycho Orin from ruining the plan even further ( after having usurped the first Chosen of Bhaal)
, he probably doesn't have much time to groom or sleep and he exactly looks that way, which makes sense imo.
Don't remind me of the spider dude, i've long stopped questioning people's 'tastes', lmao.
You'd think an 'archduke' and a politician would look well groomed looks wise but he looks like a plain dude that found a nice suit on the road and wore it. He looks hideous. Ketheric on the other hand... could make a lot more sense to be a well groomed politician from Baldur's Gate, but alas. I wish he was the last one to confront.
Edit: spoilers just in case.