From Heroes of Might and Magic I to V!

and they also left Tarnum (who also lost his immortality)

But Tarnum remained immortal; this is mentioned in the campaign about the Barbarians from the first part of the fourth game, when he was supposedly killed, and then it turned out that he was still alive. And also, in the Bucovian campaign of Shades of Darkness, there is an error in the translation of the ranger Ryland's name. He is identified as Ryland, but his name is Roland.