You can purchase illusion spells that will change the appearance of your necro pet. Last time I looked not all had been found but there are 3 skellie illusions you can buy at the quest camp in blightfire moors. The lvl ranges for those are 16-54 i think. Necrotalk seemed to have the most current news on the details.
Edited, Mar 27th 2007 5:49pm by coldhandluke