Edward Wong Hau Pepelu Tivrusky the Fourth, also known as Edward or Ed, was the last member to join the Cowboy BeBop crew. Episode 9 was her first apperance to this series. Here's a little on her background: Ed used to live on earth in an orphanage when her dad left her as a child. Ed never really got to know her parents well, and so ended up naming herself. She grew up on earth after the "Gate Incident" occured, leaving Ed with abundance in technology. She travels with her laptop "Tomato", wandering the earth and surfing the net, building her name online, making people fear her as, "Radical Edward".
Ed now works with the BeBop crew as their hacker, (which is correctly called a "cracker" in computer terms) and helps the other members by cracking into databases to help Spike, Jet, and Faye catch some person who has a bounty on their head. Ed usually lies around the BeBop with Ein, a super-intelligent Corgi dog.
As far as Ed's personality goes, she's considered rather wild, crazy and rambunctious. She usually types with her toes and floats around the ship either hanging onto something upside down, or lying on the floor. She's usually caught sleeping or typing on her laptop. Throughout one episode, she starts a game of chess against a genius bounty hunter, and doesn't end the game until the end of the episode.
Being paried with Ein helps keep Ed with company. You almost never see Ed without being acompanied by the little dog. Together they are unseparable, and become characters you grow to love.