Clara Griffin

 was the granddaughter of Nigel Griffin, the Invisible Man.

As the last surviving descendant of Nigel Griffin, she inherited his place as a member of after he and his daughter, her mother, passed away. Like her grandfather, she possessed the ability to turn invisible effortlessly, though at first, when she was stressed it was more difficult for her. Nonetheless, she used her powers for theft in order to thrive. The team recruited her when The Five had to reunite in order to acquire the source blood to stop the Cabal's Lazarus virus. She was reluctant to join, but agreed to help after Dr. Will Zimmerman told her millions would die if the Cabal were allowed to succeed.

Powers and abilities
Clara is an abnormal with the power of invisibility, having inherited it from her grandfather Nigel Griffin, who obtained the trait from the source blood. Like Nigel, Clara's molecules have photosensitive properties that enable them to affect light in such a way that they render the entirety of Clara's body imperceptible to the naked eye. Unfortunately, the concealment does not extend to any item or clothing that she has on her person, which is why she had to strip naked in order to become completely unseen. For this reason, Clara typically wore clothes that are easy to remove and no underwear beneath.

She also initially had limited control over her power, as Clara apparently had difficulty turning invisible while she's being watched. She used to visualize her targets naked in order to find the necessary focus to accomplish the deed. After her time with the London Branch, Clara's control progressed to the point where she was able to freely 'toggle' in and out of her invisibility at will.

Other than that, she is a very weak fighter. Even while invisible, Clara was barely able to hold her own against Druitt when he and Will finally detected her presence, prompting her to escape instead. She was killed off-screen by one of the Cabal's super abnormals in her last episode.