Serena and Veronica were split a soul at birth because Serenica was a Sage.
A Sage; a Prestige Class
that combines combat magic and healing magic; with a few tweaks. However, no one is born a Sage. Therefore her combat magic went to one reincarnation; and her healing magic went to the other. The sliver of soul that was her Sage self stayed with the Keeper of Time.
- This is why it was possible for Veronica's soul to fuse with Serena's after her death; their exploits; especially in the face of Yggdrasil itself; counted as the Sage Ceremony.
- This doesn't mean they have half-souls; they grew into individual wholes like starfish.
The Old Timeline still exists.
For the party; it looks as if the Luminary simply vanished.
- The same way Serenica vanished to go save the original Luminary in the post-game ending. The timeline the Party was in stayed the same.
Alternatively, the old timeline was destroyed when the Luminary shattered the Orb of Time, and the different depictions of how it happens is important.
When the Luminary does it, it shatters the Orb to pieces and his Blade of Light is destroyed, which represents that timeline being torn apart to give place to the new one, however, when Serenica does it, it merely makes a dent on the Orb, and the Blade of Light remains whole, representing that there is a "flaw" in that timeline, that is, her absence as The Timekeeper, but otherwise the orb is still whole
, this is caused by different intents behind the strike, when the Luminary did it, he did not only intent prevent Veronica's death, but also to prevent all the suffering and deaths that Mordegon caused, while Serenica knew that to destroy a timeline that had achieved true peace on its own would be wrong, and she was simply seeking personal resolution
. This would explain why multiple characters besides the Luminary display subconscious memories of the original timeline.
Alternatively, Serenica traveled to the future to meet the incarnation of Erdwin.This explains why the orb and the sword didn't break. As well as tying Serenica to be the mother of the Dragon Quest III protagonist.
The Luminary having Shypox is canon.
It explains his Heroic Mime
status, and seeing as it's a disease that one can catch later in life, it doesn't interfere with him being talkative as a six year-old.
Sandy is shown as a puppy when the Luminary travels to the past and sees himself at the age of six, as explicitly stated by Amber, which should make Sandy over ten years old at the beginning of the game. That is very elderly for a large dog, yet Sandy does not act like it at all. Furthermore, having puppies at that age would be extremely dangerous, if it's even possible. It's much more likely that the Sandy seen in the past is the mother or grandmother of the current Sandy, and in each generation of puppies one is named after her mother.
Erik's family is originally from Zwaardrust.
- Erik is the only major character besides Hendrik that has an unnatural hair color, his background is something of a mystery, and it's not entirely clear how old he and Mia are. It's possible that Erik's parents escaped from Zwaardrust during the attack, passed through Dundrasil and into Snifleheim where they fell to exposure or monsters, leaving Erik and Mia as orphans. They may also have lived in Dundrasil for a while but had to flee that too.
- Erik is 19, as stated in the character book, and having been turned to gold, time was frozen for her; Mia is 13. Corroborated in that that event took place five years before the game -making Erik 14 then- and a Party Talk comment from Sylv at the end of act two in the Viking Hideout saying he was around Mia's age when Hendrik went to Puerto Valor.
Sylvando is the reincarnation of the legendary Heliodorian knight who first owned the Shield of Heliodor, and whom more or less turned Puerto Valor around.
- In Jasper's quarters, there's a red book Eleven can read about the story of the Shield of Heliodor. In it, it tells the tale of a legendary Heliodorian knight who saves the life of the first King of Zwaardsrust, which was Drustan - whom Hendrik is a probable reincarnation of. Said knight may very well have been the same knight who was sent to Puerto Valor to oversee the sea gates, as he is the direct ancestor of Don Rodrigo - thus, Sylvando as well.
- There's also the fact as well that Sylv receives the coraza de caballero from Servantes after the Kingsbarrow Trial; the info box says it once belonged to a knight known for his godlike speed with a sword. This suit may very well have been that Heliodorian knight's own suit, handed down through the generations until it ends-up (back) with Sylv. In addition, Sylv's agility, deftness and evasion rate are really good, and one of his Pep bonuses is an evasion boost, which ties-in with the knight's "godlike speed".
- This could explain why Sylv still retains a strong sense of justice and sticks to everything the knighthood stands for, even long-after becoming an entertainer; it's ingrained very deeply within him.
Tyriant is King Arnout of Zwaardsrust, reanimated to do Mordegon's bidding.
- Tyriant is clearly based on a knight, which King Arnout certainly was, and when looking at his character model there are two very notable things; the first is that he's wearing a tattered purple cape over his armour, and his right eye is the Purple Orb. The Purple Orb was from Zwaardsrust, so it can be assumed that that was their royal family's colour, so to speak.
- There's also the fact that (in the English version, at least), he talks like how other Zwaardsrustian characters (Dave and Noah, for example) talk.
- Perhaps the cruelest piece of evidence is that he fights Hendrik - or rather, Jasper seems to summon him to fight. If Tyriant really is King Arnout, then what better way to wound Hendrik than to have him unknowingly fight (and possibly re-kill, if you allow the AI-controlled Hendrik to deal the final blow) his beloved late King, whom he probably looked up to in his youth?