For the Evulz: Nemesis' motivation for everything he does. He kills, destroys and torments people on a whim all for his sick pleasure. Nemesis tells Blake that he is the son of two complete psychos Blake busted and sent to their deaths, and that he wants revenge, but it's all lies. The son in question died before the story even began. Nemesis is just some rich, bored, bloodthirsty asshole looking for kicks as a supervillain. The heroes exploit this when they managed to arrest him by tricking him into stealing a little girl's heart transplant (its actually a pig's heart with a tracker) because they knew he couldn't resist doing something so cruel, though it turns out getting arrested was part of his plan.
The Heavy: Nemesis is directly tied to everything that goes wrong in the comic, but the ending reveals he's merely a buyer from a mastermind who allows wealthy clients to become supervillains.
Jerkass: In addition to being a murderous sociopath, he is always arrogant, condescending, and smug to everyone he speaks to.
Light Is Not Good: He is a psychopath with a white costume. In addition, everything he owns or uses, (his vehicles, his headquarters) are white.
Medical Rape and Impregnate: Nemesis artificially inseminates Blake's daughter using her own brother's sperm. Nemesis then made sure that, if they made her have an abortion, Blake's daughter would never be able to bear more children. She is later seen with triplets.
One-Man Army: Shortly after breaking out of prison, he takes on 97 riot cops and kills them all with his bare hands.
Practically Joker: See Composite Character-he answers the question of what the Joker would do with Batman's resources. Like the Joker, his true identity is a mystery, as he lies about his backstory, merely stating that he's "rich and bored".
Rule of Cool: How else is he able to stay on the outside of a plane mid-flight?
The Spook: His supposed identity as Matthew Anderson is all made up - the real one died in an India whorehouse after squandering his fortune following his parents' deaths. All Nemesis ever tells about himself is that he is rich and bored.
Villainous Breakdown: Nemesis gets flustered when the President is willing to die in order to stop him, and is openly enraged after Blake beats the crap out of him.
Villain Protagonist: Though Blake is the hero of the story, Nemesis receives just as much focus.
White Shirt of Death: His costume is entirely white, leaving blood highly visible on it whenever he's slaughtering people.
Awesomeness by Analysis: Blake's almost as prescient about what criminals will do as Nemesis is about what Law enforcement will do.
Establishing Character Moment: Performs a daring rescue during a hostage situation where he slips inside a store and swiftly guns down the criminals.
Expy: To Commissioner James Gordon. He actually resembles physically at the end of the comic when he retires and is wearing a pair of glasses as well as a mustache.
Humiliation Conga: Nemesis is driven to utterly break Morrow by killing thousands of innocents with him being unable to do anything about it, having his kid with his daughter being impregnated by her gay brother and having her uterus rigged to collapse if an abortion is attempted.
It's Personal: Morrow is seemingly on the receiving end of this trope by Nemesis, as he had previously arrested Anderson's parents for kidnapping and murdering innocents. Turns out this is a lie and Nemesis is just a random rich guy who gets his kicks by playing as a supervillain. After what happens to Morrow as listed in his Humiliation Conga entry, it could be said he flipped the tables towards Nemesis too.
Our Presidents Are Different: When Blake is faced with a Sadistic Choice, the President or his wife, both of whom are rigged with explosives, the President enforced a third option. He gets in Nemesis' face and orders Blake to blow him up.