List of characters in the Breaking Bad franchise

Lydia Rodarte-Quayle (played by Laura Fraser) is an executive of Madrigal Electromotive GmbH, working out of the company's office in Houston, Texas. Lydia, portrayed as a very nervous and somewhat troubled character, is a partner in Gus's drug activities, and Gus often works directly through her to secretly secure Madrigal's resources for his needs.

During ''Better Call Saul'', she helps Gus arrange for Mike to become a Madrigal security consultant as a cover to launder the money Mike stole from the Salamancas. When Mike takes his job seriously, Lydia complains to Gus, but Gus assures her Mike can be trusted. When Lalo later arrives and interferes in Gus's operations, Gus reports to Lydia and Peter Schuler, the head of Madrigal's food division, about Lalo stalling the construction of his superlab, but assures them he has a plan to deal with Lalo.

Within ''Breaking Bad'', Lydia continues to discreetly provide chemicals to Gus for Walt's meth production in Gus's superlab. After Gus's death and the destruction of the lab, Walt establishes a new meth production line with Jesse and Mike, with Lydia providing the chemicals. The DEA links Gus to Madrigal, and nervous that she will be exposed, Lydia asks Mike to kill 11 co-conspirators who were part of Gus's organization. Mike refuses, so Lydia pays one of the co-conspirators to eliminate Mike along with the other 10 on the list, but Mike kills the hitman first, discovers Lydia's role, and blackmails her to continue to provide the methylamine for Walt's operation. The DEA continue to investigate Madrigal, and Lydia discovers they are tracking her methylamine shipments to Walt. She provides Walt with information on a railroad tanker car shipment of methylamine, which would provide Walt with enough material to make millions of dollars worth of meth for sale to Lydia's contacts in the Czech Republic.

Walt, Mike, and Jesse enlist Todd to help steal the methylamine. During the theft, they are observed by a young boy, whom Todd kills. Mike and Jesse then decide to sell their portion of the methylamine to Walt and leave the business, with Mike using a portion of his profits to continue paying the members of Gus's organization for their silence. When the DEA connects Mike to Gus, Walt tries to get Mike to provide the names of the individuals he is paying, but Mike refuses. Walt shoots Mike, then realizes he could have asked Lydia for the names. Mike dies, and Lydia later provides the names to Walt. Walt then pays Jack to eliminate the individuals Mike was paying.

Walt eventually sells the remaining methylamine to Declan and leaves the drug business. Todd initially works as Declan's meth cook, but when Declan fires Todd, the replacement is not as good, and Lydia's Czech customers are dissatisfied. Declan refuses to rehire Todd, so Lydia arranges to have Jack kill Declan and his gang and take over the business. After Hank discovers Walt is Heisenberg and uses Jesse to lure Walt to the site of his buried money, Jack's gang arrives, kills Hank and Gomez, takes most of Walt's money, and kidnaps Jesse so they can force him to be their meth cook. Walt is forced into hiding, but a year later returns to Albuquerque to get his revenge before he dies from cancer. He meets Lydia and Todd at a coffee shop and offers them a new method for methylamine-free meth production. Todd declines, but Lydia feigns interest so that Walt will meet with Jack, then tells Todd to make sure Jack kills Walt at the meeting. Walt uses the meeting to kill Jack and his gang with a machine gun hidden in his car, and Jesse kills Todd. An ill Lydia calls Todd's cell phone to ask if Walt is dead. Walt answers and reveals that she will soon be dead because he slipped ricin into her stevia at the coffee shop. In ''El Camino: A Breaking Bad Movie'', Jesse hears a radio news report indicating that a woman from Houston, presumably Lydia, is critically ill after having been poisoned. The report indicates that her suspected ties to Walt are being investigated, and that she is not expected to survive. Provided by Wikipedia