Catwoman's Whip

Catwoman uses her whip to attack in combat, and to trip up enemies. Catwoman also uses her whip to grapple onto vantage points and buildings where she could swing from. The whip is Catwoman's signature item.

Arkham Asylum Incident
Catwoman's Whip could be seen, along with her other gadgets, in a case in the East Wing at the Arkham Mansion.

Arkham City Incident
Catwoman could use her whip as a escape weapon and combat weapon. Catwoman started out with the whip, firsthand, without even getting her Bolas and Caltrops yet.

Arkham Knight Incident
Same as in Arkham City, however it can be used on electrified goons now.

Trivia

 * Catwoman's Whip could be bought at the Xbox Avatar Marketplace.