Lou Binghe:

First of all, Luo Binghe is the protagonist - not of SVSSS, but of the in-world book the MC ends up in (transmigration/isekai situation). He has actual, literal plot armor preventing him from dying, even if something convoluted or unlikely has to happen to save him (MC takes advantage of it once to defeat the enemy - by baiting them into attacking immobilized Luo Binghe. A ceiling beam randomly falls on them 😂). But even discounting the plot armor, he's stupid difficult to kill due to his unique bloodline - being descended from a god who fell to depravity and turned into a demon - which gives him extremely powerful self-healing abilities, to the point that he can just pop broken bones back in place and be fine (has actually happened on page) or regrow lost limbs (mentioned, but not shown). And that's not even the only benefit of his blood - for you see, if he manages to get it into someone else's body, he can use it as a torture device or a GPS tracker. Speaking of sneak attack abilities, he also can walk into people's dreams to see their memories, give them nightmares, and make them destroy their own minds. And this is before we come to actual damage dealing! Luo Binghe comes from a cultivation setting, meaning people cultivate internal energy to learn fantasy kung fu, with various magic-like abilities. Luo Binghe is a prodigy who excels at both hand-to-hand combat and swordsmanship, as well as 'lightness skill' which allows him to move faster than eye can see, scale buildings in a single leap, and so on. This is additionally enhanced by the use of spiritual AND demonic energy - as a half-human, half-demon, he has access to both types - which you can think of as raw magic that can be shaped in variety of ways. For example, at one point Luo Binghe uses spiritual energy to create a fireball to fling at an enemy. It can also be used to do direct damage, such as spiritual blast - which MC describes as having an effect of 'throwing a grenade' for his own power level, meaning Luo Binghe's is even more devastating. To return to swordsmanship, at different points of the story, Luo Binghe wields two different swords. One is Zheng Yang, a spiritual sword that he can not only swing by hand, but control with gestures to send into battle independently, as well as fly on if needed. The other is Xin Mo, a cursed mythical sword he found in a hellpit called the Endless Abyss - which tries to corrupt the owner's mind but is extremely powerful, and has a unique ability to create spatial rifts, meaning its owner can essentially teleport wherever. (Including between universes, as per extras.) Oh, and if all this wasn't enough, he also has a demon army, with which he already conquered most of the Demon Realm. But the scariest thing? /If/ you manage to get him alone, without any demon subordinates backing him, and /if/ you manage to injure him enough to incapacitate him... congrats, you just pissed off his husband! Who is less powerful, but extremely resourceful and frankly insane(/respect). Luo Binghe would just beat you into submission! His husband on the other hand will trick you into inhaling parasitic plant's spores that'll take root in your trachea and grow through your brain, slowly and painfully killing you. (Yes, this happened to one of the antagonists.) Frankly speaking, getting beat by Luo Binghe is recommended. You can probably even get a spot in the demon army if you pick a right moment to concede (that's how he got most of his subordinates).

Maria Petrova/Fault Zone:

She can generate small localized earthquakes, allowing her to destabilize and damage enemies and objects. She has metal arms and legs, giving her enhanced strength, balance, and speed (she can even jump up onto rooftops and lift semi-trucks). This is in addition to having been a professional ballerina, meaning all three of the previously mentioned characteristics were already above average, and that she is extremely coordinated. I also feel like she deserves a win because of her tragic backstory. She was on her way to perform her starring role in Swan Lake when an earthquake hit. She lost her arms and legs in the accident. In seconds, she went from being a world-renowned ballerina to not even being able to move on her own. That's when she was approached by a scientist who offered her a deal: help him get rid of the Thing, and not only would she be able to walk again, she could be an even better ballerina than before. She agreed, and he gave her metal arms and legs, significantly enhancing her physical capabilities and allowing her to generate small earthquakes. Also, I'm begging y'all, let me have this. She is my blorbo, and she has been rejected from every poll she's been submitted to.

She can generate earthquakes, and she has superstrength and speed in addition to being extremely coordinated. Also, her arms and legs are metal.