Ennard first appeared in Five Nights at Freddy's Sister Location in 2016 as an amalgamation of the Funtime animatronics' endoskeletons. The character became one of the most unsettling figures in the series because of its tangled wire body and human-like voice mimicry. Clips of its vent and duct movement sounds were later extracted by fans and shared across soundboards and editing communities. The effect remains popular with FNaF creators who use the short metallic cue as an instantly recognisable warning that Ennard is nearby.