---Copperhead (Arkham Origins) vs Sadira (Killer Instinct)---

Suggested by Hungryscorpion

--Copperhead--

=Strengths=

-Above average human strength, but not superhuman. After being locked in the back of a truck, she was unable to break out. She can however, crush bones with her many grappling holds.

-Copperhead is extremely agile and quick, using her flexibility and the fact shedoesn't skip leg day to slither around her opponent's attacks before grappling them as she finds an opening.

-Has normal human durability, and wears a revealing outfit that provides little protection in return for full range of motion.

-Through unknown means, She can secrete a powerful neurotoxin from her body. This venom takes effect within seconds and is potent enough to kill a fully grown human in a few minutes at most. A person under its effects immediately becomes dizzy, stumbling around like a drunk person, followed by muscle weakness that gets worse as the toxin spreads.

Even Batman, the Determinator himself would have died if he hadn't been stubborn enough to keep living until he could get an antidote. Those afflicted by the venom experience vivid auditory and visual hallucinations as well as false tactile sensations. This means one can see, hear, and feel themselves get beaten to a pulp by a vision of Copperhead herself.

-Along with her venom, Copperhead also appears to be unusually flexible, able to bend and contort her body in unpredictable ways. She also seems extremely comfortable with her flexibility and tends to move in ways that show off her talent even when she doesn't have to.

-Has several metal claws worn over her fingers. These claws are covered in her toxin, allowing her to apply it through any cuts she gives her victims.

-Capable of trading blows with Batman for a short time, her unorthodox fighting style even caught him off guard during their first encounter. Copperhead employs her flexibility to its fullest while fighting, using her feet and legs as much as her hands. She also crawls over her opponents and puts them in bone-breaking holds.

-A cunning strategist, she tracked and ambushed Batman at the perfect time, retreating after exposing him to her venom so that it would do the job for her or at least weaken him enough for her to have an assured victory.

-Given her reputation as an assassin and the fact that Batman was unable to notice her until she was busy kicking him in the face, Copperhead has above average stealth skills.

-A skilled assassin and escape artist, having broken out of fourteen prisons on her own, including restraints such as handcuffs with ease.

=Weaknesses=

-Has human weak points and durability.

-Can overestimate her own fighting skills if she is forced into a confrontation, such as when she assumed she could take on Batman after he was cured from her venom. She was quite mistaken.

--Sadira--

=Strengths=

-Possesses normal strength relative to a woman that works out intensely on a regular basis.

-More agile than a regular person, but not superhuman. Has trained herself to gain impressive mobility in the air even without her webs.

-Seems to have basic human toughness, provided no extra defense from her revealing outfit.

-Thanks to a spider-necklace embedded in her chest, she can create silk from her body like spider webs, using them to create traps or to pull herself around the arena or move towards enemies.

-Can somehow jump a second time in the air.

-Has multiple throwing knives that she can throw at her foes during fights.

-Wears gauntlets with blades on them, giving her an added weapon to fend off her opponents with.

-An acrobatic fighter, Sadira prefers to keep moving during fights and utilize her air maneuverability as much as possible. She also is a master of Muay Boran, preferring to use kicks when using the style.

-As an assassin, she presumably has some experience with being sneaky.

=Weaknesses=

-Has normal human weak points and limits.

--CONCLUSION--

-Winner-

Copperhead

-Breakdown-

This is a very close call to make. Both women are scantily clad without any superhuman toughness, so whichever one of them suffers a critical injury first will likely be the loser.

Given what you've read above, it seems like Sadira would do just that. Being able to stay in the air longer than a regular person means that she has more angles to attack from. If she throws her daggers at Copperhead from above sh'es quite safe, given the serpentine woman's lack of counters to such an attack.

However, Sadira will likely have to get in close at some point. Her daggers are not unlimited, and Copperhead is both fast and slim, making her a hard target to hit. Even if she does get a few cuts or daggers stuck in her, she seems tenacious enough to see the fight through to the end so she would ignore the injuries so long as they aren't too serious. This all leads me to why Sadria is the least likely candidate for victory.

As soon as Sadira gets in close, all Copperhead needs to do is land even a single cut on her. And given that she's got a lot of exposed skin and prefers to use her legs for melee attacks, it would be easy for her to intercept a kick and leave a few cuts on Sadira's thigh. Her venom takes effect in seconds, meaning that Sadira would be under its effects practically immediately.

Between the hallucinations and physical symptoms, Copperhead can either finish her off with her own killer moves, or just let the poison run its course while watching Sadira attack and shout at nothing.

Either way, the fight ends in Copperhead's favor. Seems this snake will capture a spider for her next meal!