You may have made me in the image of a fighting machine, You always said that the transformation would make us feel more accepted than we ever were before.. trying to rationalize testing on a whole bunch of kids that couldn't make their own decisions.. I don't feel accepted, I feel like a monster.
But I'm not like you, because you ARE a monster.. I've fought to help people, in the defense of those that can't defend themselves.. I've fought for my friends.. I've fought for people who don't give a damn, who will never know me.. some of the same people who shunned me and threw me out of society after what YOU did to me, and I don't blame them because I know just how dangerous I am... There's a prickling rage in my head that perks my senses every minute of every hour of the day and it takes everything I have to keep that feeling supressed, from rising to the surface and taking over... You've fully let that feeling take you over and you gladly kill anybody without reason and definately without any bit of remorse... It's all just a damn game to you. I may be a monster, but you're a fiend..
...But I do have to thank you, if it wasn't for you doing what you did for me, there just may be no one who could stop you, Hell.. I struggle to slow you down.. You gave me the power to be able to exceed my natural limits.. that feeling where my knees buckle that would bring another down, forces me to take another step forward, But where I have a shit ton of get up and go you have an endless supply.. I could fight you for days on end and eventually you would out last me, even if I make no mistakes.. Sounds hopeless doesn't it, heh...
I just don't have that kind of time.. but luckilly for you and me both, I plan to keep this short.
You're right, I'm not walking away from this fight alive, but I've already felt dead for as long as I can remember anyway, so I'm not losing anything important.. However you're not walking away either.. I'm not letting you hurt anyone anymore, I'm not going to let you do to anyone else what you did to me and the others.... Because damnit if I'm going to die here THEN I'M TAKING YOU WITH ME!!!!----
This is just an excerpt from an early fight between Sadistic and Saff.. I drew it because I was a bit angry at the time but I still think it came through pretty solidly.
Sadistic confronts his former test subject in an attempt to turn him to his side, it quickly delves into a grinding battle that Saff does eventually lose, succumbing to Sadistic's seemingly infinite sustain. Sadistic (Dr. Sark) still sees potential and a chance to tap into Saff and get him to join him as long as he continues to push his buttons, so he purposely walks away once he wins.
Saff uses the loss as a learning experience, he knows he can't fight his foe conventionally and he knows he has to take better control of his own powers, as well as understanding just how exactly to manipulate them as efficiently as possible. Evil may have won the battle, but the wars still up in the air.
I decided to stick mostly with the color palette I did because it looked like fire, which sort of exemplified the feeling of fury and detest in his heart in the moment.. that and there was probably some fire to begin with. xD
Saff -

Happy u like it. :3
And Sark/Sadistic didn't really CREATE him, he was altered using the super-soldier process that Sark had tried to use on the military before his funding had dried up, and back then it was meant for humanitarian purposes and so on, but the reason why it never got off the ground was because he could never perfect it and no one was willing to risk their bodies to it, and he eventually got dismissed once he became so revolved around that one project. He and a loyal few continued on anyway and eventually set base at what is/was an orphanage because it was perfect, no one is looking for them and they really couldn't resist trials or treatment.
Short story, lots of people died, Saff was changed eventually and went initially berserk, which nearly killed the doctor (he got thrown into a vat of his chemical), but the influence of his own serum turned him into a freakish evil being who's whole outlook had become distorted into a helping by eliminating mindset.
But yeah safe to say they're not buddies.