When he was announced for 2nd season Discovery I was extremely worried. The only thing at that time I had seen him in was that god awful Marvel's Inhumans (boy that was a shitty show). And his performance did absolutely nothing for me at all. I thought he had the charisma of a brick.I don't blame you on that. If the lead of the show is that unappealing spare yourself, I agree.
Maybe one episode? They usually release it on Youtube anyway.
But someone recommended Hell on Wheels, and since hey Colm's in it, lets give that a chance. And I LOVED him in that. So I was now willing to give him a chance on Discovery. And for the most part I really liked what he brought.
I mean I seriously disliked very early Jean Luc Picard, but hell he ended up being one of my favorite characters in Trek (certainly my favorite lead).