Killian is a strong and powerful name of Irish origin, meaning "warrior" or "church". It carries a sense of bravery and leadership, making it a popular choice for boys. Those with the name Killian are often seen as confident, courageous, and determined individuals who face challenges head-on. They are known for their loyalty to friends and family and their ability to protect and provide for those they care about. Overall, Killian is a bold and impactful name that leaves a lasting impression.