Packrat

Packrat is a villain introduced in the Windows Girls A New Adventures and it's sequel Windows Girls A New Adventures 2.

Biography
According to those two episodes, Packrat does all the stealing because the shiny things are gifts for his dolls. Packrat made his debut in the episode "Little Octi Lost". It is also possible that Packrat is either a hoarder, materialistic, or a kleptomaniac based on these acts.