, ▁a ▁were w olf ▁shadow , ▁and ▁a ▁female ▁two - head ed ▁tw in ▁shadow ▁who ▁introduce ▁the ▁song ▁" This ▁Is ▁Hall owe en ." ▁The ▁demon ▁and ▁w olf ▁sh adows ▁have ▁exactly ▁the ▁same ▁voice . ▁ ▁S ke let al ▁Rein de er ▁- ▁The ▁S ke let al ▁Rein de er ▁were ▁created ▁by ▁Doctor ▁F ink l este in ▁in ▁the ▁movie ▁to ▁act ▁as ▁the ▁rein de er ▁that ▁will ▁pull ▁the ▁sle igh ▁that ▁Jack ▁will ▁pilot . ▁They ▁were ▁broken ▁when ▁the ▁air ▁force ▁shot ▁down ▁Jack ' s ▁sle igh . ▁In ▁The ▁Night m are ▁Before ▁Christmas : ▁O og ie ' s ▁Re ven ge , ▁the ▁S ke let al ▁Rein de er ▁were ▁re built ▁when ▁the ▁sle igh ▁arriv es ▁for ▁Santa ▁Cla us ▁to ▁use ▁after ▁O og ie ▁Bo og ie ▁had ▁hij ack ed ▁Santa ' s ▁sle igh . ▁ ▁S ke let al ▁Ro oster ▁- ▁A ▁S ke let al ▁Ro oster ▁is ▁seen ▁crow ing ▁at ▁the ▁crack ▁of ▁dawn ▁before ▁the ▁musical ▁number ▁" Jack ' s ▁Ob session ". ▁ ▁Under se a ▁Gal ▁( vo iced ▁by ▁Car men ▁Tw ill ie ) ▁- ▁The ▁Under se a ▁Gal ▁is ▁a ▁cross ▁between ▁a ▁g ill - man ▁and ▁a ▁mer ma id . ▁During ▁the ▁Town ▁Me eting , ▁she ▁thought ▁that ▁the ▁item ▁in ▁the ▁present ▁was ▁the ▁head ▁that ▁she ▁found ▁in ▁the