Eric Ignatius Woodall is the former head of the U.S. Securities and Exchange Commission as well as the former U.S. Attorney for the Southern District of New York. He was fired from his position for maliciously prosecuting Pearson Specter, and was later suspended from his position at the S.E.C. when it was evident that he was placed there by Charles Forstman in exchange for S.E.C. immunity.
As a U.S. Attorney, he had Mike Ross arrested and hauled into custody in the episode "No Way Out" along with Harold Gunderson for bribing witnesses at the Ava Hessington trial. Stephanie Liston who is working at the U.S. Attorney's office explains to Donna that it took him 4 years to win his last case and that he won't stop at anything.
Woodall's plan was to get Mike to turn on Harvey Specter in exchange for a deal, but he refused. When that did not work out, he brought Harold Gunderson in along with Mike to get him to testify against both Mike & Harvey.
Mike was facing years in prison, but Louis Litt arrived just in time to stop Harold Gunderson from testifying. After 4 hours, Mike and Harold were released from custody, Woodall tells Harvey that he has no intention of dropping the case, despite stopping Harold from testifying; but then Harvey tells him that if he doesn't, he will go after him for malicious prosecution, in which he refused to allow Mike to call Harvey based on a fabricated terrorist claim.
Woodall lost his job after Harvey filed claims of malicious prosecution against him. After he was fired from the attorney's office, Charles Forstman got him a job at the U.S. Securities and Exchange Commission, in exchange, Woodall protected Forstman. He was then suspended without pay after his money transactions with Forstman was revealed and was facing prison.James Quelling was the main reason why Mike was hauled into custody, even though he did not directly go to the U.S. Attorney's office and report him, he brought the settlement to Allison Holt's attention, after which she then went to the attorney's office.