Jayce has a really dumb face, lol. I like his character design from mid season 2 onwards, but in season 1 I just want to smack the living hell out of him every time I see him smiling.
But I actually like him as a character. He's just... unhinged and insane. He's not a very "good" character, he fucks up literally EVERYTHING he touches and thinks he's a good person while being the most egotistical prick ever. He also has a happy trigger on his suicidal ideation. Literally on his first episode he almost kill himself because he can't work his research. LMAO love that for him. He then proceeds to become a paranoid councillor that fucks over the undercity EVEN MORE and then he has hallucinations and basically becomes schizophrenic after he's touched by the arcane. LOL what a character arc. He's also very prone to manipulation and that really fucks with his agency in the story.
Viktor is the "good" character with strong morals, but he fucks up due to desperation and isolation (and he's fucked over by Jayce not respecting his wishes regarding the Hexcore).

Jayvik is my main ship these days, but the fandom is MMMMH sometimes VERY good, but most of the time not that good at all. I'm glad people are having fun and from what I've seen they don't take themselves too seriously, but a lot of people really need to learn how to tag their shit.