Ribecca is a white skeleton with black eyebrows, droopy green makeup, and purple eyeshadow. She wears a jacket with purple sleeves in a checker pattern, green fluff, covering her ribcage. Similar to Flutter, Flyte, and Rodger, Ribecca also lacks a mouth.

Qwelver has described her as a "Girlboss", due to her design.

Ribecca is an artist. She likes to design costumes, as seen in a dialogue with Gourdy. Ribecca loves fashion and is a pretty kind Toon. She is almost always cold, thanks to her being bones (As confirmed with one of her descending floors dialogue), which is why she wears her sweater.