George McFly was Marty’s dad and we see him the most as a young man in 1955. He was even more pathetic as a teenager as he was as a grown up.
Because in the original 1985 timeline, he had severe confidence issues that really held him back.
I really enjoyed watching him knockout Biff.
And luckily, he got the love of his life back and the timeline was secured.
And with his son’s help, he became a much more successful man now that the timeline was changed for the better.
Apparently his actor Crispin Glover had a pay dispute with the studio and chose not to be in the second movie. But they got another actor and put his mold to create a fake face. Crispin Glover ended up suing the studio and ensuring that Hollywood can never do that again.