Well, if anything, I just gleamed Ophanimon's deal from the quotes alone, so do forgive me if it's off the mark.

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[u][b]Alphamon vs Omegamon. Fight![/b][/u]

Intro: "The Royal Knights stand for justice and peace to all, not the selfish desire of one being under the guise of justice. It's time the Knights return to their true roots from which I was born."

Victory: "A shame about your misplaced zeal, Omegamon. I used to grapple with the same problem, but I managed to look beyond the high tables of the Knight and leave behind this perverted cause I no longer recognize. It saddens me that you couldn't, or perhaps wouldn't, do the same." 

Defeat: "Mark my words, old friend: I consider this a much more honorable end compared to being Yggdrasil's dancing pawn."

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[b][u]Dorugoramon vs Ophanimon. Fight![/u][/b]

Intro: "... And here I thought I have anger issues. You're a different bag of crazy altogether!" 

Victory: "I've seen a rage similar in myself in the past. I haven't quite let go of what gives me my existence, but at least I don't let it consume me the way it does you."

Defeat: "So you are what I could've become... That's... a scary thought."

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[b][u]OktavMermaimon vs Alphamon. Fight![/u][/b]

Intro: "A solo for the one and only Knight of the Empty Seat! This is truly quite a outstanding stage!" 

Victory: "I hope you enjoyed my heartfelt serenade, Alphamon. I have so much to thank you for, one song wouldn't be enough to convey the joy I felt from the serendipity born of your convictions."

Defeat: "Aaah!! My tune is off! How mortifying!"