Zooble is one of the main characters of Glitch Productions' indie animated web series The Amazing Digital Circus, voiced by Ashley Nichols. They appear to be a Mix-and-Match toy who is stuck in the Digital Circus alongside five other victims.
I'm going to ignore Toy Story 4 since I haven't seen it. Cast your favorite characters as these beloved childhood toys! Also, this should be fairly obvious but please don't cast any Toy Story characters in this.
