The Nice Guy (or Girl) is nice. Not that he'll necessarily be an All-Loving Hero, but he's definitely not unpleasant, obnoxious or an overly cynical Byronic Hero edgy rebel. These characters are kind, friendly, psychologically well-balanced, morally good and socially decent in most cases, and in short, someone anyone would genuinely like to be around and have as a friend, which is often what they are to the hero and/or his extended cast. He won't engage in jerk-like behavior, but probably responds in kind to Vitriolic Best Buds, and Beware the Nice Ones is still absolutely to be considered.
Nice Girl has been suggested to play 44 roles. Click below to see other actors suggested for each role, and vote for who you think would play the role best.