User blog comment:12th Supernova/Chapter 773: TwoFace got nothing on this/@comment-4493594-20150115142942/@comment-10543621-20150116013754

Although an extended Robin fight would be as awesome as can be, I really doubt that will happen. I think Oda never meant for Robin to be an 'extended fight' kind of person. She was originally an 'assasin' type of fighter, and her abilities lets her take out people almost instantly. With what she's shown so far, I doubt she's into long extended fights.

Considering the fact that Kyros is still in the game, I don't think Oda will allow Kyros to be overshadowed like that. The dude deserves his revenge. What I'd like to see though is the following scene:

Robin: "Soldier-san. Or should I say gladiator-san. I understand your desire for revenge. You fight honourably as a gladiator and no doubt you would wish to finish this fiend on by your own two hands. But every minute longer the fight lasts places Rebecca in further danger."

Kyros: "Robiland... What do you propose?"

Robin: "This man is a fiend without honour. What do you say if we waste no further time with him and put an end to this now?"

Diamante: "You talk big Nico Robin. One more woman joining the fray isn't going to change anything! (Attacks once more, causing the floor to ripple and sending his snakey sword towards Robin and Rebecca again)

Kyros: "Rebecca! Robiland!!!"

(Robin sprouts giant hands from the ground that lifts both herself and Rebecca off the ground, Multiple hands sprout from Diamante's sword and moves it out of the way again.)

Robin: "Gladiator-san, if you are agreeable, the honour is all yours. Mil fluer: Gigantesco mano!"

(Two giant hands sprout from behind Diamate and grabs him with multiple smaller arms restraining his entire body much like how Hakuba was restrained)

Robin: "He's all yours now."

Kyros (while leaping forward): "Thank you Robiland. You are right. I cannot allow this murderer to put the most important person in my life at risk any further! Diamante!! You have already taken Scarlet away from me! You will not lay your hands on my daughter!!!"

(Kyros executes a single tremendous slash at Diamante that completely incapacitates him while sending a shockwave of power across the entire flower field, splitting a path behind the slashed Diamante as he falls to the ground)

Diamante: Slain in battle.