JKSManga
It’s gotta be Truedream. The one with the glowing red eyes who stepped onto the ship had to have been the Jim Eno clone. As for how he’s alive I’m guessing some sort of stasis that allowed him to suspend his life since he didn’t know Qi and couldn’t use an age slowing ability if he had one stored since he can’t use abilities he takes.
I wonder how Truedream managed to live they have no Qi expert to teach them how to drain life. The only thing I can think of is Jim cloning Truedream over and over again. Also it is strange that the Dalki doesn't know about the human, vampires Dalki and the relationship between them. The one that joined Truedream during the war and it already confirmed he knew that one person won the war. So likely his memory has been altered otherwise he would know more. Either that he is a cloned Dalki.
While I believe it's Jack Truedream and Jim Eno behind it all, I don't believe they have a Dalki army... They would have had to get another Dragon (and the last one took most Originals and all the Leaders to take down) to create them and this time with very long life spans and races with Abilities, which seems mostly a Human/Vampire thing while the other races have powers inherent to themselves (like Qi and Blood Aura respectively). I think they're building a mercenary army large enough to wipe the Vampires and the Humans; that's why they built a massive business catering to the wealthy and why Dagoth said he needed more crystals for the Voyage...