Stormonu
NeoGrognard
To me, it would depend on how he intends to react to the PCs if/when the find out about the artifact.
Does he ask the PCs to anonymously return the item and continue his life? Well, then's he not evil.
Does he grab the item and run, trying to avoid the PCs but not willing to give it up? Not evil either, I think, just either scared or greedy.
Does he admit to the crime and turn over the item, hoping for mercy from the PCs? Definitely not evil, and possibly even redeemed.
Does he invite the unsuspecting PCs to dinner on their arrival (and before they learn of whose done the theft) and poison them to hide his theft? Yep, that's evil for sure.
Does he track down the PCs and hire thugs to take out the PC or attempt to kill them himself? Yep, he's evil.
Does he attempt to frame the PCs for the theft, possibly turning them in for a reward? Yeah, that's evil.
Does he ask the PCs to anonymously return the item and continue his life? Well, then's he not evil.
Does he grab the item and run, trying to avoid the PCs but not willing to give it up? Not evil either, I think, just either scared or greedy.
Does he admit to the crime and turn over the item, hoping for mercy from the PCs? Definitely not evil, and possibly even redeemed.
Does he invite the unsuspecting PCs to dinner on their arrival (and before they learn of whose done the theft) and poison them to hide his theft? Yep, that's evil for sure.
Does he track down the PCs and hire thugs to take out the PC or attempt to kill them himself? Yep, he's evil.
Does he attempt to frame the PCs for the theft, possibly turning them in for a reward? Yeah, that's evil.