S. Kyle

S. Kyle is a patient at Arkham Asylum.

Biography
Not much is known about S. Kyle, but a plastic bag marked as Kyle's belongings containing a cat-ear headband was seen when Nora Fries was searching for her husband's gun.

Equipment

 * S. Kyle's headband: Kyle presumably wore the headband as a criminal before being admitted to Arkham Asylum.

Behind the scenes

 * In the DC comics, Selina Kyle is an anti-hero who occasionally crosses paths with Batman known as "Catwoman" as either his ally or enemy, but has since left the life of crime and now became his frequent ally.