both worst just with different traits...
xue yu is dumb, disloyal, coward, pathetic... he's gaslight trash but he has some shred of humanity compared sijun & huepeng
sijun is pure evil, no consience, no remorse, hostile & dangerous ... very manipulative & opportunist
huepeng insane, total freak & disgusting....
li anyan is annoying, childish, obnoxious shameless bas****, nuisance
that wa** pervert oldman & su peilu(?) also not any better
all them r worst, hycrocrite trash, nobody is morally superior than other, everyone such a di**... but if u talk about crimes count or biggest villain in the story, it's sijun, he's the mastermind & control the others, basically final boss & the others were smaller mobs
