Watched Season 1 on Netflix yesterday and my favorites are Genos and Mumen Rider, but I would have loved to see more of Lightning Max and Stinger
Saitama, I think his style is funny and he is strong
Saitama
Saitama, Bang, Blast and Fubuki
Saitama, since he is not powerful in other anime universes like the other characters in his anime. By that I mean e.g. Genos is strong in his anime universe, but has no chance in anime like Dragonball, whereas Saitama is on the same level as Son Goku.