In "The Son of Neptune" by Rick Riordan, a character named Ella is assisting Tyson during a battle. She is depicted as a whimsical figure, flitting above him and providing tactical advice to help him succeed in combat. Her guidance focuses on targeting an opponent's vulnerable areas, specifically pointing out that the groin is sensitive.
Tyson, taking her advice to heart, manages to land a hit on the Earthborn, illustrating how teamwork and strategic communication can turn the tide in a confrontation. Ella's presence adds an element of humor and lightness amidst the intense action, showcasing her unique role in the narrative.