Honekoneko is a purple cat plushie with half of its face and body's skin missing, showing its bones. Its expressions often matches that of Stocking, implying the plushie might be alive. Stocking also has the habit of dressing Honekoneko in outfits similar to hers, like in "Catfight Club", where she dressed the plushie in a sailor-like outfit. In "If the Angels Wore Swimsuits", it was revealed Honekoneko can breathe fire.
Honekoneko has proved to be quite popular with fans, for Gainax has released a variety of merchandise featuring the plushie cat.
According to Great Eastern Entertainment's shop, Honekoneko is actually called Hollow Kitty, a parody of the name Hello Kitty.