Jack MacReady
Background
Jack MacReady is the mayor of Wheelsy, South Carolina. His family used to own R.J. Macready Auctioneers & Funeral Home. Mr. Pibb is the only soft drink he likes.
During the events of Slither (2006) played by Gregg Henry
As Jack is driving through town, he starts honking at Inconsiderate Driver who has left his vehicle parked in the road while he goes shopping. He calls the Inconsiderate Driver a vulgarity and then looks over and sees Upright Mom and her daughter staring at him and Upright Mom tells Jack, good morning. At the Deer Cheer, Jack gets up to make a speech about how after God invented Earth he said man should have dominion over animals.
Later, Jack complains to Tourneur and Bill Pardy about the city council wanting Grant Grant found, as a Sad Drunk waits to be processed. Jack worries that Shelby is going to cause a hysteria when he hears Bill describe Grant as squid looking. Jack gets upset when Wally, Trevor and Margaret aren't taking things seriously and suggests Grant might just have lyme disease. Shelby tells Bill of another animal attack and he, Wally, Trevor and Margaret drive to the location. Bill has a meeting with the other officers, Jack, Charlie and Dwight. He tells them that he thinks Grant will next attack the Strutemyer property. Before they leave, Starla Grant demands to go with them.
They drive to the Strutemyer property and wait for Grant. He eventually appears and kills a cow. Starla walks up to him and talks to him. Charlie points his gun at Grant and demands he show them where Brenda is and Grant uses a tentacle to cut him in half. Bill and the others start shooting at Grant and he slithers away. They follow him and end up at a barn where they find a severely enlarged Brenda Gutierrez. She tells Bill that she is hungry and then her body starts to tear apart and explodes. Thousands of worm-like things pour out of her. They go into the mouths of Wally, Trevor, Tourneur, and Dwight.
Bill tries to contact Shelby, but can't reach her. Starla, Jack and Margaret drag the bodies of Wally, Trevor, Tournier and Dwight out of the barn, and the bodies suddenly get up. Wally and the others start talking to Starla as if they are Grant. Trevor spits a yellow liquid onto Margaret which makes her skin burn and enlarge. Wally zombie threatens Starla and she shoots its head off and a worm comes out. Bill and Kylie Strutemyer see Starla and Jack being chased and Bill uses his vehicle to ram Trevor and Starlia uses a T-Post to kill the Trevor zombie. Starla and Jack get into the car and Bill is able to get in contact with Shelby and she tells him that his mom called and said the toilet in the house was clogged from what he did the weekend before. Kylie tells them about what she saw when the worm attacked her. As they are driving back into town, they are rammed by a vehicle. Starla is dragged away by the zombie horde along with Jack, but Bill and Kylie manage to get away.
Jack regains consciousness and finds himself in the basement surrounded by impregnated people eating raw meat. Woman in Basement gets upset with him for looking at her and tells him he has no idea how hungry she is. He opens the basement door and is impregnated by Grant. Jack is brought back down into the basement and he starts eating a dead body. Bill and Kylie enter the house and a deformed Jack asks Bill to kill him, which he does.