This is how Ryan's and Sonic's encounter with Dark King and Dark Queen goes in Ryan and the Black Knight.
[Sonic and Ryan arrive in the throne room]
Ryan F-Freeman: Merlina! Evil me...
Dark Queen: I've been expecting you.
Dark King: And so have I, Ryan.
Sonic: Just one question before we settle this. Why'd you and Evil Ryan do it?
Ryan F-Freeman: Weren't we trying to save this kingdom from the Underworld?
Dark Queen: This kingdom will fail one way or another. Such as it's fate.
Ryan and Sonic: Huh?
Dark King: Do you and Sonic know what is to become of this kingdom, Ryan?
Sonic: Beats me.
Ryan F-Freeman: Yeah.
[Dark Queen approaches Ryan]
Dark Queen: Lancelot and Gawain's rift shall doom the Round Table.
Dark King: Arthur was killed by his son Mordred, and departs for Avalon.
Ryan F-Freeman: Whoa.
Dark King: This was to be our ideal world. But, it will not last.
Dark Queen: King Arthur and the Knights of the Round Table will end in ruin.
Ryan F-Freeman: Oh my...
Dark King: The King Arthur my mentor and my queen's grandfather Merlin created led to nothing but mistakes.
Dark Queen: But, my king and I can succeed with the power of the scabbard.
Dark King: Creating a kingdom that never ends.
[the Dark Queen used her magic and a flower appears in her hands. Ryan saw a flashback where Evil Ryan and Merlina looking at some flowers. In reality, Ryan gasps]
Sonic: What good is a world that goes on forever!?
Ryan F-Freeman: And how did you consider Merlina as your queen, Evil me?!
Dark Queen: My and your friend's sorrows at it's ruin runs deeper then the deaths of the underworld.
Dark King: Because, Ryan. I think she needs me to rule by her side for your mentor, Primus the creator.
Dark Queen: Do you not understand?
Ryan F-Freeman: Yes. I understand what you mean.
Ryan F-Freeman: Yes. If light and darkness are eternal. Then, I think Gwen's and Duncan's love must be the same... Eternal!
Dark King: You are right. I didn't understand eternal before. But, I do now.
Sonic: Ryan does! And I don't want to!
Dark Queen: Your efforts are futile.
Ryan F-Freeman: Evil me! You can't do this!
Dark King: Why not? There's a Kingdom here and it needs to be immortal!
Sonic: No way.
Ryan F-Freeman: But, you're destroying this kingdom to create it!
[Dark Queen summons her projection and Dark King summons the X-Blade and attacks Sonic. Ryan and Caliburn blocks his attack]
Ryan and Caliburn: Sonic!
Sonic: Ryan! Caliburn!
Ryan F-Freeman: You idiot! A knight must always be on his guard!