The earliest we players can meet Palawa Joko and his armies is in the Bonus Mission Pack mini-mission The Battle of Jahai mini-mission. In that mission we attack Joko's rear vanguard of Awakened and corsairs, although from a distance it seems that corsairs didn't take part in the main battle. So who did?
Mummy warriors, who share their appearance with both the Awakened Troopers (Joko's rank-and-file) and Joko's Elite Bodyguard. They look humanoid and probably are (were) human, but it's impossible to tell with the masks. Even if they are, I'm not sure what creature the masks are supposed to depict. Any ideas?
This is probably the one I find the most interesting (probably because I find giants one of the more enigmatic races in the GW universe). The semi-canon description for the Gray Oasis of Giyah landmark in the gw.dat says that it was once the home of a race of giants enslaved and made undead by Palawa Joko. Mahk's son says that his father told him that the giants of the Gray Oasis used to collect tribute and slaves from other tribes in the Desolation. He also says that most of them were killed by Palawa Joko, but we know that at least some survived - in the quest Last of the Breed Mirza Veldrunner says that the gray giants in Kourna have been over-hunted and they can now only be found in the Desolation. Credit for the quest is gained from killing Nomad Giant rangers and Sadistic Giant necromancers; I wonder if the tuskless Giant Hunters and Giant Brawlers we meet in the Desert Highlands (north of the Crystal Desert) in ''Path of Fire'' are related to the gray giants of old - if not, we might have seen the last of Elona's gray giants. The gray giants we see in GW1 actually more closely resemble giants in Central Tyria, which have grey rather than brown skin and have similar tribal paint. They don't have tusks, however, and they are cyclopean - this doesn't necessarily mean that they aren't the same, just that they had a redesign between GW1 and GW2 (trolls gained an eye and tusks, ettins gained an extra ''head''), and the jotun also got a revamp. I digress.
Smiting and protection monks. These strongly resemble centaurs, but their skulls don't resemble horse skulls. They have an extended jaw like a horse, but they have very human-like eyes and nose, and their mouth is completely round. They also have pointed feet, which doesn't fit with either the Veldrunner or the Losaru centaurs. We do know that Palawa Joko enslaved centaurs as part of his armies in this era, as in the Gate of Desolation mission he tells Zhed Shadowhoof that Zhed's dead ancestors served as his cavalry. He also calls Zhed a "plough horse" and the centaurs "beasts of burden", but unless centaurs were very physiologically different in the past, I don't think this is what we're seeing. I think the Awakened Acolytes might be a combination of various different species, including centaurs. Joko's dialogue in the cinematic for A Deal's a Deal indicates that bones, flesh, and mummy wrappings are used for a purpose in his kingdom - maybe this is how he makes his minions.
Maybe these are the most interesting, because these necromancers are clearly charr, right? We know that the charr attempted to expand south sometime before 100 AE and warred with the Forgotten, but that was probably in the Blazeridge Mountains rather than in the Crystal Desert. We know that the charr once spread out through the northern reaches of their homelands and down into the lands east of the Shiverpeak Mountains (Ascalon and the Blood Legion Homelands), but we've never seen any indication of them being this far south. They certainly have charr feet, but they have a different number of claws on their hands, and their skulls are different. So this looks like another composite creature - but made of what?
Mesmers that also resemble centaurs, but in a different way to the necromancers. They have centaur hooves, but their heads are very small (it's impossible to tell what their skulls are like because their heads are inside an elaborate casing). They also have large "boob plate" chest pieces. The size of the head and the breasts are actually consistent with this concept art of a female GW2 centaur - I don't think we ever actually meet a female centaur in GW1.
Elementalist elementals. They appear to just be constructs, although they do also have the same pointy feet as the Awakened Acolytes, as well as the capacity for sentience.
Dervishes. Again, they're humanoid, although their feet are rather large and their toenails look almost more like claws. The casing on their heads is quite long - possibly long enough to hold a centaur's head. If the Acolytes have non-centaur (although I'm hesitant to say human) heads, then maybe this is what happened to the centaur ones.
Palawa Joko's been locked up for near enough 200 years and his power has mostly dissipated. What's changed in his armies? Well, as it turns out, not much. We only see one new enemy type, and maybe that isn't surprising. Many of Joko's armies were never killed (or destroyed) - they just fragmented and fell under the control of his Generals. Some of these remained loyal to Joko, some of them rebelled, and some Awakened just became hostile to anything still living. The Awakened we see in Nightfall are probably the same as the ones in the era of the Battle of Jahai, as Joko wouldn't have been able to make any new ones in the time since.
Paragons that generally appear to be human. We never see them ride zombie horses (we never see horses in GW at all, despite several references). Undead horse mount in LW Season 4 plz ANet.
Perhaps unsurprisingly, we've seen some big changes. Unfortunately I haven't finished the PoF story yet so there's only so much I can say about these! I'll add my thoughts to this thread when I have them, but in the meantime, I'd like to know from you guys what new things you've learned about the Awakened while playing PoF. How are they created, how are Joko's armies structured, are any of the generals from GW1 still "alive" and kicking? To what extent do the Awakened maintain their free will from life? What happened to the giants, charr, and centaurs, and what are these things...or these things (mini giganticus lupicus, anyone?)?!