Quote Originally Posted by Crushnight View Post
Bozja

Diabolos returning was interesting and raises more questions though, did the Allagans actually summon him or just part of his essence, because he got fully summoned by High Voidmage Cessair to coerce Amdapoor into surrender and then promptly sealed, yet this happened while he was also fused to Allagan tech at the same time.

So was the Diabolos we face in Mhach still not at 100% full strength even after absorbing the queen, certainly adds more fuel to Diabolos can return again fire.
HW lore that might be important
In various places in Azys Lla and the Fractal Continuum, it is mentioned that the Allagans were trying to artificially replicate Voidsent.