Dark Signers Arc
After Yusei Fudo defeated Grady, he was informed by Rex Goodwin that the Dark Signers have finally shown up. He questions if its okay, but Rex states that with the Signers being awake it was only a matter of time before the Dark Signers would as well.
Later, after Rex had left to confront Roman, Lazar opens a secret panel and speaks with the man, who asks if Rex had already left. Upon confirming that he had, the man affirms hes counting on them, as they've waited almost 20 years for the brothers to turn the page in this worlds history.