At the age of 15, Noel signed up for the Crossbell Guardian Force and underwent harsh training under supervision of Sonya Baelz. She demonstrated impeccable skills with firearms, which led to her promotion as sergeant at a young age.
After the Cult Incident in Zero no Kiseki, in which she fought alongside Lloyd Bannings, she decided to join the Special Support Section. She displayed proficiency in driving vehicles and was designated the S.S.S. official team driver when they received their official police vehicle.