Voozclub
From the Audiovisual Identity Database, the motion graphics museum
Background
Voozclub (also known as Vooz Character System or simply Vooz) is a South Korean company founded in 2000.
Vooz Character System
(September 18, 2006-October 31, 2019?)
Logo: On a shade-shifting purple background that's also used in the credits, We see the word "VOOZ" with the word "CHARACTER SYSTEM" below it.
Technique: The text appearing and the background's shade changing.
Music/Sounds: The credits theme.
Availability: Rare. It was first seen on Pucca, which premiered in 2006.