Tiamat

Skeleton:

• When the hero comes into the tomb, I want it to be dead first, no faffing about with boss fight (which they always win) BS.
• I like the musical nature of their bones.
• I already am one, sort of…

If you disregard supernatural powers of undead, it’s different depending on who you ask anyway, I’d go with a skeleton.

Ghost. Flying, intangibility, spooky telekinesis … Sounds great.

Lich would be fun

The kind that instantly kills the necromancer, then returns to being dead.

Probably like a skunk or something idk.

Dracolich

Darksign’d undead. Sure I’ll hollow out eventually, but for now lets do some jolly co-operation.

Wraith, so that I can go through walls, carry a big-ass scythe, and upgrade from generating Fear to generating Terror, so I can exploit that juicy morale penalty even if the enemy unit is immune to Fear.

Blue whale.

I’m pretty lazy, so… spectre. Having no body to haul around will make things easier.

Alhoon

I’ll be that guy, and say abomination. The more twisted the better. Like a mouth in my belly, extra arm on my back kind of twisted. I’ll learn to enjoy striking terror in my victims’ hearts. Afterlife will be dope.

I’d go as more-or-less human ala the movie Warm Bodies. Just because I’m dead doesn’t mean I can’t have a nice romantic fling!