Cailee Spaeny: Cailee Spaeny. Actress: Civil War. Cailee Spaeny is an American actress and singer. Spaeny was born in Springfield, Missouri. Growing up she spent a large amount of time in the Springfield Little Theatre, where she participated in many plays. Some notable SLT alumni include Lucas Grabeel and Kendra Kassebaum. In the 2013-2014 season, she landed the lead role of Ariel in the production Disney's Little Mermaid Jr. In 2016, she...