Scatt

Scatt is a recurring nickname for Scott Wozniak. The name often appears as the name of game accounts or tags during gameplay footage.

Nintendo Labo | Adventures with the Variety Kit
After building the Toy-Con RC Car, Scott Wozniak declares himself a genius and throws a high school diploma with the name Scatt Wazniak on it out of a window in Old Location McGee.

Night Trap
As the SCAT team arrives to save the human characters from the vampire characters in Night Trap, Scott Wozniak says "That's me!", referring to the Scatt nickname.

Collector's Edition
In the background of the video, three stockings are behind Scott Wozniak, one reading "Vince Young", one that's text is unknown due to Wozniak covering it, and one reading "Scatt".

The Game Room
The name Scatt is the nametag for a Diddy Kong in Super Smash Bros. Brawl shown during footage as Scott Wozniak talks about his old game collection.

Kinect for Xbox 360
Scott Wozniak's username on the Xbox 360 is "ScattWaz" as shown during some footage.

Animal Crossing: amiibo Festival | The Dark Age of Nintendo
As Scott Wozniak is talking about what the Animal Crossing series is, footage is shown of his villager's name in Animal Crossing, Wendy's Scatt.

Browsing the Wii Shop Channel
While browsing the Nintendo Entertainment System games on the Wii Shop Channel, Scott Wozniak finds S.C.A.T.: Special Cybernetic Attack Team and says "That's me!", referring to the Scatt nickname.

Trivia

 * There exist many similar nicknames, such as "Scitt" and "Scutt".