@BigLuffy559:
I think Riku was imitating Kyros' fighting style(Rebecca does too), so the gladiator of the past that he can't remember is Kyros and he can't remember because he was turned into a toy.
No sir! Allow me to take you through this route of understanding what's going on.
It should be, Kyros has King Riku fighting style. Because, according to recent chapter 740
! , King Riku was shown to meet a man or boy named Kyros and he told him to follow him just like Shanks went in search of Yassop. This means: Kyros has nothing to do with the Royal family, so he shouldn't know the Riku's fighting style.
This brings us to the conclusion that, King Riku brought Kyros in as a young man and taught him the fighting style which he knows.
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@madriano:
Brennen what kind of wizard are you? How can your join date be Aug 2020? lol
Haven't you noticed that the place which the DATE and TiME of this forum shows is the same color as his name and stars, doesn't that tell you something? It means, he can manipulate/bend time any way he wants.
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@King:
That wasn't my conclusion at all. Somebody just came up with that argument and I questioned it.
Even though I wasn't the one who came to that conclusion but here-
Ricky(King Riku) was introduced as a Former Gladiator
If he wasn't a former gladiator then Oda would've probably given him another intro. But it's nothing but assumption though.