[1] Felix Solis, Damian Young, Alfonso Herrera, and Adam Rothenberg joined the cast for the fourth and final season.
Born to a religious family in the Midwest, Wendy ran away from home as a teenager, leaving behind her brother Ben, who was diagnosed with severe bipolar disorder.
An experienced political consultant who worked on Barack Obama's Illinois senatorial campaign, Wendy quit her job after Charlotte was born, and entered a deep depression after suffering a miscarriage resulting from a car crash.
After moving to the Ozarks, Wendy first gets a job as a stager for a local realtor, and later leverages her political experience in currying favor with billionaire philanthropist Charles Wilkes to approve the construction of a casino used to launder the cartel's money.
Wendy gradually grows to enjoy the power and status she gains through her activities with the cartel, and orders a hit on Ruth's father Cade Langmore after he assaults Charlotte.
Struggling to cope with her guilt, Wendy lies to the public that Ben suffered from a drug addiction, and misleads the police into conducting an investigation into his "disappearance".
Shy, reserved, and curious, Jonah demonstrates a precocious intelligence throughout the series, learning how to hunt and handle firearms from the Byrdes' terminally ill tenant Buddy - with whom he develops a close friendship - and eventually laundering money on his own through cryptocurrency investments at age 14.
Upon finding their bodies, a devastated Ruth arrives at Marty's home with a shotgun and threatens to kill him unless he names Wyatt's killer.
Throughout most of season 1, Rachel has a healthy and friendly relationship with Marty until she discovers his money laundering scheme and, despite agreeing to continue to work with him, loses all trust in him.
Agent Petty uses these legal troubles to coerce Garrison into returning to the Ozarks and wearing a wire to spy on Marty.
Jacob in turn murders the Snells' loyal servant Ash - whom Darlene viewed as a surrogate son - in order to appease the cartel.
The cartel orders the Snells' poppy fields burned to deter the FBI investigation into the Byrdes; Darlene retaliates by poisoning a heroin shipment, killing 57 people.
After Wendy arranges to have Social Services remove Zeke from Darlene's care, Wyatt proposes to her to help win the child back.
He gets into college, but after learning that Ruth killed Russ, instead of attending, he moves in with Darlene Snell in exchange for doing work on her farm land.
After getting fired from his job as a substitute teacher, Ben moves in with the Byrdes, and learns about their involvement with the cartel after witnessing Marty get kidnapped.
Maya Miller (portrayed by Jessica Frances Dukes; seasons 3-4)[11] is an FBI forensic accountant investigating the Byrdes' casino business.
In season 4, sensing that his nephew Javi's reckless leadership is going to bring down the cartel, he decides to "retire", while agreeing with Maya to be an FBI informant in exchange for immunity.
Javier "Javi" Elizonndro (portrayed by Alfonso Herrera; season 4), is Omar Navarro's hotheaded nephew and a lieutenant in the cartel.
Sam is later employed as the manager of the Lickety Splitz, a strip club purchased by the Byrdes for money laundering, and forms a romantic relationship with Jade, one of the strippers.
In the third season, Sam begins to frequent the Byrdes' casino, the Missouri Belle, and develops a gambling addiction that Wendy later curtails by banning him from the premises.
Ruth then employs Sam as the manager of the Lazy-O Motel, which she purchases for her own money laundering operation after cutting ties with the Byrdes.
Bruce Liddell (portrayed by Josh Randall) is Marty Byrde's partner in the Chicago-based investment firm they agree to use to launder money for a Mexican drug cartel.
Bruce and the trucking company owners who move the cash skim $8 million, and Del murders them after the cartel discovers the theft.
Bobby Dean (portrayed by Adam Boyer) is the initial owner of the Lickety Splitz strip club, through which he was laundering money for the Snells.
Wendy eventually extorts Wilkes into backing the casino legislation by donating to his charity with cartel money, forcing his cooperation.
Helen later attempts to partner with Wilkes to obtain her own casino license, hoping to leverage his animosity against the Byrdes, but she is killed by the cartel.
A former representative of the United Auto Workers union from Detroit, Cosgrove has been running his trucking business out of Missouri ever since the mob invested in various local casinos.
While the casino project proves successful, Marty eventually cuts ties with Cosgrove after his son, Frank Jr., brutally attacks Ruth in retaliation for the deaths of his friends at the hands of the Lagunas cartel.
He carries out most of the cartel's assassinations in the area, including Cade Langmore, the Byrdes' therapist Sue Shelby, and Wendy's brother Ben.
After his friends in the mob are murdered by the Lagunas cartel during a drug shipment, a drunken Frank Jr. viciously attacks Ruth, whom he blames for the incident.