Of Monsters and Men
IMDb; TV.com; Wikia

Based on the series Warehouse 13. This is a series of 10 webisodes that streamed on Syfy.com in 2011, between the second and third seasons of the show. The series (which has nothing to do with the band "Of Monsters and Men"), was sponsored by Toyota Prius, and there is some very conspicuous product placement in the story. The first webisode is entirely live-action, but most of the webisodes are in comic book form, as Pete, Artie, and Claudia all get sucked into an old comic book called "City of Ghouls." So of course they spend most of the story avoiding monsters while trying to find a way to get back to the real world.

Grand Designs
IMDb; TV.com; Wikia

A series of 10 webisodes that streamed on Syfy.com in 2012, during the show's fourth season. Like the previous series of webisodes, it's sponsored by Prius, and it also starts out live-action. But the whole Warehouse gets turned into a steampunky diorama, and now Pete, Myka, Artie, Claudia, and Leena are all two-dimensional cardboard figures. So once again, they spend most of the story trying to get back to the real world.