Shade
Monster Junkie
Don't care for the Search or Sense Motive, but I'm not sure what to substitute them for.
Concentration instead of Sense Motive?
I'd considered that, but it lacks spells or spell-like abilities, so it has no use for that skill. Tumble has limited use (for escape purposes mostly), but beyond that most other skills serve no purpose or don't fit the flavor.

Great Fortitude I suppose, since that's their weakest save.
Yeah, I guess we'll go with that.