Selina Kyle, also known by her alias Catwoman, was an orphan who learned to survive on Gotham City's streets. She took to thievery to survive, but was determined to do it in her own style. She learned martial arts and trained extensively to perfect her own skills at cat burglary. Her criminal activities are often tempered by a reluctant altruism, making her an inconstant villain and occasional heroine. She steals objects with feline names or motifs. She is also a strong ally to Batman sometimes.