Suki is the son of Mrs. Skewer, but has nothing against the neighboring penguins and their lighthouse.
Personality
Unlike his hostile and warmongering mother, Suki is generally seen as compassionate if not ignorant. Even though the penguin's lighthouse was interfering with his mother's fishing trips (and perhaps hurt his father), he couldn't bear to see the penguins suffer like he had, which was one of the reasons why he decided to go out fishing personally.