Dick Roman

Richard Dick Roman is the main antagonist of season 7, he is the leader of the Levitathans, and having assassinated the real Dick Roman to be able to undermine his fortune since he was a billionaire businessman. And through (Richard Roman Enterprises) Dick Roman intends to make mankind like his snacks and dominate the earth on top of the food chain. Although the Leviathans hate all other specimens of monsters, Dick Roman himself seems to have shown one by the demons after rejecting Crowley's offer to join forces while talking, Dick Roman also said if the Leviathans weren't busy, they could easily sweep away the earth demons in the universe.

History
Dick Roman before the seventh season events, he was one off the God created the Leviathans he locked up for being so bestials.

Hello, Cruel World
After all the Leviathans leave Castiel's body, Edgar is sent to find other Leviathans that are drawing human attention. Edgar recalls that the old Leviathan in the area hates more news since his boss. He also the eldest Leviathan sent kill the Winchesters brothers.

Slash Fiction
Dick later received a call from Agent Valente who says that Dean Leviathan and Sam Leviathan were defeated by the Winchesters brothers, he then suggests cloning again, but Dick says no, that they can't have the Winchesters brothers coming back from the dead a second time, as if you don't even want American media would believe that. He also warns Valente and threatens him if he fails again.

And when Dick gets in his limousine, he finds Crowley waiting for him. Crowley introduces himself and suggests that they should work together, but Roman refuses Crowley's offer, and when Crowley says it was he who freed the Leviathans. Roman laughs that he is not interested in working with demons. He still shows a contempt for demons and says they are shorter than humans and even threatens the extiction of the entire specimen if he had no more important things to do, with which Crowley then teleports.