, ▁N imo y ▁said ▁in ▁an ▁interview ▁before ▁" M oment um ▁De ferred " ▁a ired ▁that ▁he ' s ▁" wait ing ▁to ▁see ▁what ▁these ▁ter rib ly ▁imag in ative ▁writers ▁come ▁up ▁with ▁for ▁the ▁future . ▁I ’ m ▁expecting ▁that ▁I ▁probably ▁will ▁be ▁going ▁back ▁to ▁work ▁for ▁them ▁before ▁too ▁much ▁longer . ▁I ' m ▁looking ▁forward ▁to ▁what ▁they ▁send ▁me ▁on ▁the ▁page ". ▁After ▁shooting ▁the ▁episode , ▁P ink ner ▁said ▁" We ▁want ▁him ▁back ▁as ▁much ▁as ▁he ▁wants ▁to ▁come ▁back ". ▁N imo y ' s ▁next ▁appearance ▁occurred ▁six ▁episodes ▁later , ▁in ▁" G rey ▁Mat ters ". ▁As ▁a ▁reference ▁to ▁a ▁brief ▁appearance ▁by ▁N imo y ' s ▁character ▁William ▁Bell , ▁sound ▁editor ▁Bruce ▁Tan is ▁was ▁instruct ed ▁to ▁create ▁b ells ▁as ▁a ▁rec urr ing ▁mot if ▁in ▁the ▁scene ▁when ▁Bell ▁enc oun ters ▁Oliv ia ▁and ▁gives ▁her ▁vital ▁information ▁about ▁the ▁parallel ▁universe . ▁Tan is ▁explained ▁that ▁because ▁he ▁couldn ' t ▁put ▁the ▁sound ▁of ▁b ells ▁in ▁everything , ▁he ▁" to ok ▁some ▁dry ▁ice ▁record ings ▁and ▁pitch ed ▁them ▁down ▁consider ably ▁and ▁rever bed ▁them ▁to ▁become ▁ring ing ▁t ones ▁that ▁I ▁played ▁under ne ath ▁the ▁whole ▁scene ". ▁Tan is ▁also ▁used ▁some ▁" re vers ed " ▁ship ' s ▁b ells ▁as ▁well ▁as ▁cry stal ▁glass ▁rub s ▁in