I think Dark Kiva is moot...but Ouja, I didn't cast because of the "Skull factor" per say...he has the intent AND the means. Especially if he has all three beasts, he does use them seperatly. When he uses the Advent, the beast comes pretty much from nowhere, he blindsided many people with the Rhino contract monster, and Evildiver does attack from above. Not to mention he has all the other cards, so he can use the strike vent and Swing Vent as well. One of my favorite seens in Ryuki is him just walking down and using beast after beast on different Riders. And yes the desire to kill is a VERY powerful thing. Ouja would open a battle with a final vent if he was "vexed."
Agito, is a powerhouse, but you have to get him really ticked off before he hits the higher levels of power.
Ryuki? not even going to go there...
New Den-O would underestimate him amd get mowed over by the variety of attacks
Zeronos...ok, I would pop the popcorn and watch this...he would make it a good fight, yes. Even with Vega form, but Ouja does know how to actually duck from a ballistic attack. I envision it being Ouja seemingly knocked back, even backed into a corner, but Venosnaker looms from behind and...well...bad things happen to Zeronos...
Dark Kiva though would fight sneaky, and never hold back. Ouja would just have to fight dirtier than usual.

The thing is is that this Dark Kiva is King, since I had Taiga as Saga fight earlier in the battles

You pretty much just applied the "Skull factor."
Agito would lose because he's not angry enough?

Apparently he thinks Aaaaaaaaaaaaaaaaaaagito.gif is canonical :lol.

Aguyto and Zeroman.

Meh, this whole thing already has a premise that reeks of bad fanfic, might as well write your favorite characters with completely different, more "badass" personalities.

I'm terrible at being objective with these threads. I'm going with Zeronos and New Den-O. I still need to get around to watching the shows the others come from.

Burning form is fueled by fury, yes?

And no, did not apply "factor" because I gave valid tactics as opposed to "have to give it to my boy" per say...

Ouja. I'm not going to explain why. Power is one thing. Skill and clear intention (murder) is another.

Since we have a lot of votes already, I'm gonna close this battle. Agito and Dark Kiva move onto the semifinals!