
Ambrus |

There are several 3.X means by which one can gain an undead familiar:
The Stitched Flesh Familiar feat (Libris Mortis, p. 30)
The Improved Familiar feat (Complete Scoundrel, p. 78) allowed a Vargouille (sans its kiss ability) at 6th level.
The Undead Familiar feat (Dragon Magazine 280, p. 62)
The Animate dead familiar spell