In Season 1 of Not a Box, Riley the bunny embarks on incredible adventures through limitless environments, meeting new friends and encountering fantastic adventures, all imagined with just one cardboard box. The series showcases Riley's imaginative journeys into magical worlds, reflecting how a six-year-old thinks and plays, though exact episode-specific adventures are not detailed in the available sources.

The main characters in Not a Box Season 1 include Riley, the bright-eyed bunny and imaginative protagonist, and an Adult character voiced by Ian James Corlett. The show focuses primarily on Riley's imaginative experiences and the new friends she meets in her imagined worlds, though specific character names beyond Riley and Adult are not provided in the sources.

Riley's imagination is central to the story, with the series inviting viewers to step into a rich world of environments, characters, and encounters that are as limitless as their imaginations. The show captures the storytelling style of a six-year-old, reflecting how kids think, talk, and play, with Riley using a simple cardboard box to imagine magical worlds full of new friends and adventures.

The series features a variety of limitless environments that Riley imagines using her cardboard box, but specific recurring settings or detailed environments are not explicitly described in the available information. The focus is on the imaginative transformation of the box into different magical worlds and adventures.

The Adult character, voiced by Ian James Corlett, appears alongside Riley in the series, likely serving as a narrative or supportive figure in Riley's imaginative adventures. However, detailed information about the Adult character's specific role or interactions with Riley is not provided in the current sources.