However I do find it a bit amusing that a supposedly centuries old vampire would be a level 1 rogue, hah.
I mean if he does not have most of the characteristic traits of a vampire spawn is he really a vampire spawn?
No resistance to nonmagical weapons, no regeneration, no spiderclimb on walls, no weaknesses (sunlight, water, ,,,). OK in Larians defense you can't really do it otherwise in a still balanced way.
Only occasionally drinks blood (no strong animalistic urge can easily decide against) and occasionally has sharp teeth.
If you take all characteristic things away then vampire is just a word.
I guess he is a Twilight Robert Pattinson vampire