On the first page the illusion is just like Dio... Also, I do have some expectations for Caligula's being pissed = Teresa's being pissed.
On a side note, my guess is that Barbaros is looking for Lacile's grandpa, who was also one of the 2 other heroes: Sieg or Arialdo. OR he's looking for someone related to Leana... Anyway, looks like he is the final boss of this manga.
Thanks for the chapter!