- Metamorphosis: He is capable of turning his body into multiple spherical forms, ranging from a ball of fire, ice, iron, he's even capable of shrinking to the size of a baseball. 
- Superhuman Speed: By contorting his body to form a ball, Roundhouse can roll at speeds far beyond a normal human's.
- Superhuman Strength: In his ball form, Roundhouse's body can smash cars.
- Superhuman Durability: Roundhouse has been able to survive being within the blast radius of a nuke capable of blowing up Times Square, along with falling from orbit into the East China Sea, with his only noted injury being a concussion.
- Genius Level Intellect
- Allergies: Billy is allergic to cat dandruff.
- Technological Reliability: If Billy's suit stops working, he turns into a blob, making it difficult for him to speak and to move.
- Billy has a Viewtube account with around 2000 "buddies" (subscribers).
- He considered Claire Wu his best friend until her death. He currently considers Kid Flash his best friend.
- 33 Appearances of William Wu (Prime Earth)
- 31 Images featuring William Wu (Prime Earth)
- 2 Quotations by or about William Wu (Prime Earth)
- Character Gallery: William Wu (Prime Earth)
|Teen Titans member |
This character is or was primarily a member of the younger superhero team known as the Teen Titans, in any of its various incarnations. This template will categorize articles that include it into the "Teen Titans members" category.
This character is or was primarily an enemy of the Teen Titans, the Titans, or any of the other various Titans incarnations. This template will categorize articles that include it into the "Titans Villains" category.