Released on April 13, 2007, this series was meant to be a continuation of the plot of Hidden Palace Zone Adventure, since the original series had been lost. It only saw the release of one episode, however, and was never continued.
It featured many of the characters from HPZA that would otherwise have been left unknown, most of them recolored sonic sprites, except for Sonic, Daze, and Ray.
Any other characters would've likely been taken from the original series, but it's impossible to tell who they would've been.
- Hidden Palace Zone Intro Adventure