Sometimes you can't beat a good bastard in a story, someone who will do underhanded tactics to win, kick a defeated opponent when they are down or is always about the reward after they complete a quest/job.
Been reading The Greatest Estate Developer and it's your standard Isekai tale, guy wakes up in the body of a lords eldest son he read a fictional story about and knows they are in massive debt, all die to be the catalyst for the knight that serves them who's the MC. So he uses his architectural knowledge to change their fortunes but does it in the most bastard way.
He'll bitch slap an entire college full of stuck up nobles because he can get away with it, kurbstomp his opponent after he wins a duel to then trick him into exile, force a water contract on a rival noble that essentially binds his future generations to pay him extortionate fees and much more. This series jusy passed 100 episodes and has some of the best faces I've seen from a series.
So whether it's Leon from MobuSeka or Amos from The Expanse, who's your favourite fictional bastards?
My favorite would be Vic Mackey from The Shield. He's a bad person and deserves to have his life completely fall apart at the end. It's a testament to the writing in the show that he got what he wanted in the end, but it cost him everything. Honorable mention would go to Forest Whitaker's character Jon Kavanaugh from the show. He's the primary antagonist for a season, and I ended up hating the character so much. That's when I realized just what a great actor that Whitaker is.
I'd also say Tom Cruise's character Vincent in the movie Collateral. Just an all around badass villain. His character performs what's probably the best Mozambique drill in all of cinema in that film.