Christina Hayden serves as a knight of the Earlshide Kingdom, distinguished by her auburn or red hair and brown or red eyes, typically arranged in an updo. Her appearance corresponds to an adult classification. She emerges during pivotal moments involving the kingdom's leadership, notably attending Shin Wolford's fifteenth birthday celebration alongside King Diseum von Earlshide and military commander Siegfried Marquez. At this event, she witnesses Shin's display of extraordinary magical prowess, an exhibition that elicits universal shock among onlookers due to its unmatched magnitude and potency. This attendance positions her within the inner circle of the kingdom's elite. Her knightly duties encompass upholding security and order, though documented accounts provide no further specifics on her operational methods or expanded narrative role.