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Wu (ウー) is a character that appears in Sonic: Night of the Werehog. He is a ghost who lives in a haunted house where he competes with Su to win the affections of Lah. Lah collects photographs of scared people, so the two ghosts compete to scare people that come to their house and then take the best pictures, which they give to Lah to judge.

Appearance
Wu is a stereotypical-looking ghost with green eyes and a long, skinny body. He wears a red bandanna and has fangs on the top of his mouth.

History
When two children entered their haunted house, Wu and Su scared them and took their pictures, which they presented to Lah. To Wu's triumph, Lah chose his photo. As Sonic and Chip entered the house no soon after, the ghosts attempt to scare them and take their photos. They took many pictures of Chip, who was easily scared, and Lah liked them. However, she was left upset because Sonic was not scared in any of the pictures.

Wu and Su promptly went after Sonic, but when he transformed into Sonic the Werehog, Sonic scared the two ghosts off as they accidentally took pictures of themselves. When Lah saw them, she bursted into uncontrollable laughter. Their pride now hurt, Wu and Su teamed up to attack Sonic, fusing into Baker. Baker's strength and abilities made short work of Sonic the Werehog, even after Sonic tries to exploit Baker's inability to appear invisible in photos. Eventually, Baker knocked Sonic out and was about to take his picture when Wu and Su began to fight over who would take it, causing Baker to separate. Waking up, Sonic attacked Wu and Su, spinning them around the house before sending them flying through the glass roof of their house with a powerful punch.

When Lah saw Sonic the Werehog, she instantly fell in love with him, so she had Wu and Su kidnap Chip so that she could disguise herself as Chip and follow Sonic, much to the heart-broken Wu's dismay.

Trivia

 * Wu and Su make a cameo appearance in the Xbox 360/PlayStation 3 versions of Sonic Unleashed during Marcantonio's Town Missions in Spagonia and Adabat. They also appear on the game achievement "I Ain't Afraid of No Ghost."