It's not a literary agency. It's apparently a film and video production/management company with an emphasis on animation.
According to questions posted at film industry boards, the website's been "under construction" for years, and there's no information about any possible sales he's made on the Internet.
Here is the information I found about the company's principal (and possibly only staff member) Garrett Hicks:
Garrett Hicks is manager/owner of Will Entertainment, where he manages TV and film writers, animation directors, and children's authors and illustrators. Garrett got his start in the industry as a development executive with Walt Disney Feature Animation.
This is the bio he provided to a community college where he teaches a course.
If you got this information from GuideToLiteraryAgents.com, I think this is a pretty good example of how they sometimes reprint press releases without investigating the actual track records of the folks who sent them. The comment that "he's really not an agent per say [sic]" doesn't count as enough due diligence in my book.