Air Reaver doesn't originally have a show sound

Reavers that have specific show sounds:
Spectral Reaver (makes appearance in Defiance, at Avernus, when Raziel
and Kain are about to fight)
Material Reaver (probably, same place as the Spectral Reaver, but also
when Raziel tries to attack the Elder God)
Dark Reaver (Can be heard in Soul Reaver 2, twice)