From amongst the classical typology, of course. In life Jesus was clearly a powerful cleric, capable at the very least of Create Food and Water, Dismissal, and Water Walk, as well as the various Cure and Remove Curse spells. We see no evidence of his having used the reverse forms of these spells – except perhaps in throwing the money lenders from the temple, which may have been simply mundane combat – but he must clearly have been an evil cleric, because he came back from the dead under his own magical powers, and the various guidebooks make it clear that this is something only ever done by evil clerics. He also appears to have come back in a form possessed of its previous memories and with a strong will, which rules out the possibility that he was just a restless spirit (reasonable to wonder, given the nature of his death). At the very least he was possessed of a vengeful will, but more likely he planned his return from the dead in some way.
So considering this, he must have been either a Wight, Vampire or Lich. But I’m pretty confident from the descriptions of his actions after his reanimation that he ventured out during the day, which rules out Vampirism. I’m not clear on whether Wights have a problem with sunlight, and the only extant description of a Wight – from Tolkien’s work, which addresses a time that I think predates christianity – isn’t clear on the matter as far as I can remember. But anyway, Wights don’t usually retain magical powers, and also we have no evidence that Undead Jesus could do level drains, and he did seem to at least retain possession of the Geas spell. So, I’m thinking he must have been a lich.
This is bad news for the world, but it does explain how christendom spread so quickly after his reanimation. It might also explain some of the subsequent troubles between Islam, Judaism and Christianity. Clearly the elder figures of Judaism in that time were wizards of various kinds, and probably wanted rid of this troublesome lich; while I don’t think it’s a stretch to presume that Islam’s founder was some form of Arabian paladin (as well as a social reformer), so he would also have had problems with liches. Though his disputes with the elder figures of Judaism suggests he may have had a problem with magic-users too, so maybe he was a form of Barbarian.
So perhaps the great historical movements of the early christian era need to be viewed in terms of questing adventurers in classic classes, rather than this silly stuff about social-cultural movements etc. You heard it here first.
Now, the obvious result of this lich operating behind the veil of chrstianity is his influence on the popes. As time passed he would surely have crumbled to demi-lich status, and been interred somewhere in the vatican, from where he would control the various popes in a vice-like grip. Maybe even Avignon’s anti-pope represented a genuine clerical reaction against him? The problem of course with killing a lich is to find its phylactery, which I think many would construe as being the Turin shroud; but we’ve seen this is a fake, so what else could it be? My suspicion is that Jesus is a cunning old lich, and has disguised his phylactery in the form of the piss-christ. He knows that the greatest enemies of christendom are the liberal-arts media, so of course he has disguised his phylactery in a form that they will defend to the death.
Truly, 2000 year old Undead minds are devious.
Note that this theory isn’t without its detractors. Some experts believe that the Pope is a devil, possibly even Satan himself, exerting his will on earth through the powerful focal point of Scottish soccer. Despite the obvious improvements that the campaign against the Pope’s influence have brought to the Scottish game, I don’t think there is any evidence to support claims that Jesus, the Pope or any of the other elders of any of the main churches of Europe or the Middle East are Infernal Outsiders. Though I grant you the possibility that Tony Blair is.
In any case, the best solution is clearly to take off and nuke the entire site (the Vatican, and Scotland) from orbit. It’s the only way to be sure…
fn1: Or is it Quest? I always confuse which one is a clerical spell. But maybe Jesus was a cleric/magic-user. He seems to have had access to a lot of enchantment-type magic that is more traditionally seen amongst wizards…
fn2: I think the Barbarian character class is an interestingly misnamed one, because the word in western history implies a savage or wilderness-oriented figure, but the character class actually allows a much broader range of characters than this. For example, the bedouin or the tribesmen of Afghanistan during the era of the crusades could probably be construed as “barbarians” under the character class system, but I think they actually had quite a sophisticated written culture, and at least in Afghanistan they had cities, armies, orchards, etc. … see Flashman for descriptions of the palaces and cultural practices of Afghanistan in, e.g. the 19th century for an example of “enlightened” “barbarians”.