Here's a description of their role and characteristics:
* The Jellicles are the "tribe" of cats: They are a community with their own unique customs, traditions, and rituals.
* They sing about the Jellicle Ball: This annual event is where the Jellicle cat known as the "Old Deuteronomy" chooses one cat to ascend to the Heaviside Layer, a mystical realm of feline paradise.
* They narrate the story through song and dance: The Jellicle cats use a variety of musical styles, from traditional show tunes to rock and roll, to tell the story of the Jellicle Ball and the various cats vying for ascension.
* They represent the community: The Jellicles are a diverse group, each with their own individual personalities and stories. This allows the musical to explore themes of community, individuality, and the importance of making choices.
While there's no single "narrator cat", the Jellicles collectively embody the spirit of the story, offering insights and observations on the characters and events unfolding.