It seemed obvious to me that the character of Queen Elsa from Disney’s excellent Frozen had glimpses of similarity to Dr. Manhattan from Snyder’s excellent The Watchmen. Both had nearly infinite power, which detached them from their humanity and fellow humans. Each secluded themselves far away in a self-made palace as a way of both escaping and saving the people close to them. Both had trouble containing their power.
That said, I don’t think I remember Dr. Manhattan ever breaking out into song.