The King I suggest below is designed to be purely a social leader instead of a killer or protector, who has some survivability but still relies on protection from others.
The King
Special
Tenacity (Passive) - Immune to occupation and target changing. Immune to death at night once.
Loyalty (Passive) - (Starting Good King only) If you are executed, nobody can be accused of treason for one day (two days, if you are executed before Day 4).
The Royal Finger (Day) - Your next vote for treason will count twice. - Infinite uses
Decide Fate (Day) - Decide whether to execute or pardon the player on the stand. - 1 use
Audience (Night) - Invite a player to speak with you in your room. They can still use their night abilities. If you still have night immunity, they will be death immune also. - Infinite uses
Decree (Night) - If you accuse someone of treason tomorrow, only they or yourself can be accused of treason that day. - 1 use