According to Roustabout, the executives of TransGene International are these. They allegedly perform illegal genetic modifications on unwilling humans, and are rumored to be behind the creation of the villainous Team Carnivore.
Simon Sterling of Sterling Industries is an arms dealer who provides super-tech to government agencies. He's been exposed for illegally selling weapons on the black market to criminals and hostile nations, but have avoided prosecution thanks to his vast fortune and Army of Lawyers.
The Boys: James Stillwell, Vought's head of "Superhuman Development", is an emotionless sociopath willing to do anything and everything to improve Vought's bottom line and cover up their superheroes' indiscretions, up to and including plotting the assassination of the President of the United States.
Darkwing Duck: The mysterious CEO of Quackwerks, Taurus Bulba, whose main goal was to find the new code to activate and control the Gizmoduck armor.
Deep Gravity: It turns out that the damage to the freighter Vanguard was deliberately caused by Drummond, the efficiency guy from the corporation which owns it, due to having been paid off by a rival corporation.
Disney Ducks Comic Universe: While he is sometimes portrayed as the exact opposite, Scrooge McDuck is typically this trope, especially in the Italian Disney comics. He treats his nephew Donald basically as an indentured servant, and most of his schemes are ridiculously greedy or ruthlessly forces some small competitor out of the market when he moves in with his vast empire. Although, even at his worst Scrooge will balk at things like outright murder. Notably, in The Life and Times of Scrooge McDuck, his Start of Darkness is seen, turning him from the Honest Corporate Executive he sought to be into this and costing him his relationship with his family for decades.
Echo: The research labs at Henri seem to be neck deep in murder, government conspiracies and potentially world-ending technologies, all in the pursuit of an advantage over China and a few quick bucks.
The Boom! Studios young adult miniseries Heavy Vinyl ends with the reveal of a Big Bad who is one in the music industry. Producer Ric Blaze has been kidnapping and brainwashing up-and-coming bands using mind control technology to alter the way they create new songs. When supporting character Irene points out this seems unnecessary since Blaze's albums already make a lot of money, singer Rosie Riot (who figured out what Blaze was doing after he brainwashed the guys in her band) explains Blaze isn't doing this just for money. He and the music corporation are attempting to make their bands produce bland, meaningless music they can use to keep their audiences nice and docile so they can keep making money and keep controlling them.
Jem and the Holograms (IDW): The Infinite miniseries involves an alternate universe where Jem and Jerrica being one and the same has become public knowledge, resulting in Eric Raymond founding a company called Jemcorp to brainwash people with the hologram technology in addition to killing Jem and the Holograms as well as the Misfits with the exceptions of Kimber and Stormer. Pizzazz is also revealed to have faked her death and is hidden in a secret room by Eric.
Lady Mechanika: Lord Blackpool; a Steampunk arms manufacturer very much in the 'dark satanic mills' mould.
Scooby Apocalypse: Rufus Dinkley, Velma's brother and one of the Four, is a top-tier businessman, who financed the experiments at the Complex. Post-apocalypse, he's holing himself up in his penthouse, forcing the scientists he's holding captive to work non-stop to find a way to not reverse the monster transformations but to control the monsters. And he's shown killing the ones who complain about the pressure he's putting on them.
Shaman's Tears: General Patrick Pending, CEO of Circle Sea, who attempts to create a genetically engineered slave race of human/animal hybrids he can sell for profit.
In Tintin: Flight 714, László Carreidas might fall under this trope. He's not one of the story's antagonists (who are after his money), and not so much corrupt as compulsively dishonest (he always cheats when playing Battleships). However, the fact that the villains are planning to steal from his Swiss Bank Account in which Carreidas has more than ten million dollars under a false name does imply his corruption. Also, while under the influence of Truth Serums, Carreidas claims to have lived a very dishonest life, stealing since he was 4.
A more typical example is R. W. Trickler of General American Oil in Tintin: The Broken Ear.
Tomboy (2015): Irene Trent has manufactured a drug called Ambidrex, which causes murderous and violent tendencies in its users and is sometimes deadly, and is also willing to have innocent people killed in order to hide this fact.
Violine: Van Beursen and his company's board members are this.
Zot!: The Blotch. It's also revealed that Charity is this trope on a planetary example.
