If you're going to have many animated characters on a single slide or within your presentation, it may seem like a lot of work to configure everything, but PowerPoint has no way of animating ...

Launch Microsoft PowerPoint, and open the PPTX file for which you want to use a GIF as the background. Select the appropriate slide. Click the "Design" tab, and locate the "Background" section.

A new series of movie character portraits from pop culture artist Mike Mitchell overlays a grainy GIF element to lend them a big screen feel.