Vengeful Airspirits spawn following the death of A Castellan of Air - they come as few as one at a time or as much as four at a time. Being 46th level, they are dire charmable.
Marshall Stamm Bladecaster - http://eq.magelo.com/profile/1280962 <Temerity> - http://www.temerityguild.org/ on Al`Kabor for EQMac...the closest thing to a "Classic" server that we'll ever see. http://www.eqmac.com/forums/index.php
These are the little mobs that can spawn when you kill the "Castellan of Air" mobs. Can spawn in a number anywhere from 1-4 when the Castellans die. Very similar to the mini 'dillos that spawn when you kill the regular 'dillos.