Who would win in a fight? Oni or Nemesis

hand to hand combat I gotta give it to oni, nemesis is roughly half a foot taller than oni but oni is trained and disciplined with both about the same muscle mass

given their weapons from any game oni his club / bloodfury and nemesis rocket launcher its probably nemesis if he can land the shot unless oni pulls a gru on him

given their dbd powers only, oni would probably clean house with his sword vs nemesis's whip and the zombies are down in one slice even more one sided if oni has bloodfury

overall I think its oni

From a historical standpoint, we may be giving Oni too much credit. His primary weapon of choice is inferior outside of the area where he operated in life, and though he does have the Kanabo at his back (literally), we know Nemesis can break through several feet of solid concrete with just his face. So...

Also, the 'martial arts' of the samurai would likely fall short to Nemesis' genetically engineered strength.

HOWEVER

Since we are taking Nemesis' fantastical origins and existence into account, we must also do the same for Kazan. As a servant of the Entity, we know the Oni is much larger than he was in life, while also being capable of extreme feats of strength even without his explosive bursts of legendary fury. According to his cinimatic trailer, he's heavy enough to make the ground shake with every step. That takes quite a bit of force, even for a man of his size. From this we can surmise that he is absolutely PACKED with dense muscle, strong enough to smash pallets and even completely neutralize a grown human with a single blow. His speed also suggests that all that muscle weight hasn't slowed him down.

Considering that both are immortal beings of impressive strength and stature, I believe the Oni and Nemesis would be a close to even match, at least within the parameters of the Entity's realm.

I think Nemesis takes it, regardless of whether he's allowed to use his mutations. His tentacles very much give him a huge range advantage without compromising lethality.

Both are EXTREMELY strong... and this is probably the closest fight how ever I still think Nemesis would have the upperhand

The Oni, is not actually a supernatural being, he was simply a well trained warrior given the nickname "Oni Yamaoka" because of the mess he would leave behind, he was also almost killed before being taken by The Entity

Nemesis on the other hand, not only has a height advantage, but a weapons advantage. His tentacle, rocket launcher and flamethrower are already reasons why I think he would win this fight, but he doesn't only have that. Its shown that he's able to Sprint at incredible speeds.

Now, I haven't mentioned one thing about Oni, and thats Blood Fury. Oni in Blood Fury would definitely stand a chance against Nemesis if not even overpower him, right?

Here's the thing... Nemesis has a very particular attire and its not for nothing. What he wears is made to limit how much he mutates, meaning if Oni starts beating the crap out of Nemesis, the more and more he's gonna mutate and he'll become even bigger, stronger and faster than he already is.

Nemesis wins this 100%