The Pevensie siblings are four fictional characters from C.S. Lewis's The Chronicles of Narnia series. Their names are Peter, Susan, Edmund, and Lucy. They are known for their adventures in the magical land of Narnia, where they play significant roles in the battle against the evil White Witch. Each sibling has unique traits and abilities. Peter is the brave leader, Susan is practical and nurturing, Edmund experiences a journey of redemption, and Lucy is the first to discover Narnia. Together, they help fulfill a prophecy that brings peace to the land.