Characterization

Frost and fire's main character was Sim.

Sim is independent because after he reach the stage of adolecence he starts a journey on his own in his desperate need to find the scientists.

He is also intrepid/brave because knowing the consequences of his actions he challenged other people and the fire of the sun itself in a war to gain more days of life.

He is smart because he knew that if he went on to war he would gain more days of life to get to the ship.

And finally he is a curious character because from the beginning of the story he asked himself why life on this pllanet was the way it was? why his parents died? and what was the secret withing the ship?