Main Characters

I think there are 3 main characters in the story.

Peter

Valentine

Ender

so basically does three characters are siblings. Peter is the oldest, Valentine is the only girl, who's second oldest, and Ender the youngest.

Peter is the bad guy. (Antagonist)

Valentine is just normal.

Ender is the good guy. (Protagonist)

Peter is wants to kill Ender who's the youngest sibling because Peter thinks that Ender is better than him.

I think Ender is pretty naive, because eventhough Peter wants to kill himself Ender still loves him.