Vince Gilligan and Peter Gould’s massively acclaimed prequel to Breaking Bad, Better Call Saul, is set to bow out with its upcoming sixth and final season. Not only does this season have the burden of wrapping up all the show’s unresolved storylines; it also has to make the entire Breaking Bad universe fit together in a cohesive thread.

RELATED: Better Call Saul: 10 Episodes That Can Be Enjoyed On Their Own (Outside A Full Rewatch Of The Series)

Beloved characters like Walter White and Jesse Pinkman have yet to cross over into Saul’s timeline, and the sixth season of the show is the last chance to include such fan service. In what ways could the final season of Better Call Saul connect to Breaking Bad?

Kuby Could Come Into The Picture

Kuby and Huell lay on a pile of money in Breaking Bad

While fan-favorite Huell Babineaux has already started working with Jimmy McGill on Better Call Saul, one of Saul Goodman’s closest associates is still missing from the spin-off: Patrick Kuby, the smooth-talking conman played by Bill Burr.

Burr has been enjoying a hot streak as his standup cred continues to grow and his Mandalorian appearances have been widely praised. It would be great to see him back on-screen with Lavell Crawford in Better Call Saul.

Kim Could Take On Jesse As A Client

Aaron Paul as Jesse Pinkman in Breaking Bad

Ever since Better Call Saul began airing, Breaking Bad fans have been eagerly waiting for Aaron Paul to show up. This is the final season now, the last chance for Jesse to appear on the show.

Since Breaking Bad showed Jesse’s first meeting with Saul, maybe he’ll work with Kim before working with her husband. Kim is now working with young delinquents who can’t afford a lawyer, so Jesse could easily be one of her clients.

We Might See Saul Send Mike To Jesse’s House

Mike and Jesse in Breaking Bad

Throughout the second half of Breaking Bad’s run, Mike became a second father figure in Jesse’s life — and a much more positive one at that. Where Walt just manipulated Jesse to do whatever he wanted, Mike only ever wanted what was best for Jesse.

Saul was behind Jesse meeting Mike in Breaking Bad’s second season as he sent him to clean up Jesse’s apartment after Jane’s untimely death. Better Call Saul can show one of the lowest points in Jesse’s life from Saul’s perspective.

More Hank & Gomez

Hank and Gomez in Better Call Saul

Since Breaking Bad hinted that Hank had a history with Saul’s charlatan act, fans eagerly awaited Hank’s introduction on Better Call Saul for years before he finally showed up in season 5.

RELATED: Better Call Saul's 10 Best Story Arcs, Ranked

It was a delight to see Dean Norris back in the role of Hank alongside Steven Michael Quezada as Steve Gomez, and it would be great to see them again in season 6.

Lalo Could Have An Unexpected Role In The Background Of Breaking Bad

Lalo Salamanca smiling and sticking his head out of the car in Better Call Saul

By the time Gus Fring begins working with Walter White in Breaking Bad, he’s pretty much toppled the Salamanca empire. Only a couple of Salamancas are still alive and Gus enjoys reminding Hector that he’s the one responsible.

But in the season 5 finale of Better Call Saul, when Gus sent a team of assassins to kill Lalo and viewers were expecting his swift execution to explain why he’s not in Breaking Bad, Lalo suddenly turned the tables on his would-be killers. He massacred them, identified Nacho as the culprit, and marched off into the desert to wreak revenge. Maybe Lalo will have a surprising retroactive role in the background of Breaking Bad.

The Show Can Explain Huell’s Post-Breaking Bad Fate

Huell in Breaking Bad

One of the most well-known unresolved storylines from Breaking Bad is what happened to Huell. The last time he’s seen in Breaking Bad, he’s being left in a safe house by Hank right before Hank goes off to the desert, where he’s caught in a firefight and killed.

The final season of Better Call Saul can explain Huell’s fate. He might reconnect with Saul somehow if he’s exposed in the black-and-white present-day Gene timeline.

Nacho’s Fate Might Tie Into The Events Of Breaking Bad

Nacho in Better Call Saul

Fans have been fearing a grim fate for Nacho since the series began. He’s caught between Gus’ meth empire and the Salamanca crime family, and after the shocking events of the season 5 finale, Lalo knows Nacho betrayed him and he’s mad.

Whatever terrible fate awaits Nacho (or, heaven forbid, his saintlike father) in the final season of Better Call Saul, it might indirectly tie into the events of Breaking Bad.

Did Gus Order The Hit On Tomás Cantillo?

Tomas in Breaking Bad

11-year-old drug dealer Tomás Cantillo has the distinction of being the first (but not the last) child to be killed on Breaking Bad. After a meeting with Jesse and Gus, the two drug dealers who employ Tomás agree to limit his involvement in the hands-on drug trade.

RELATED: Better Call Saul's 10 Best Cliffhanger Endings, Ranked

However, shortly after the meeting, Tomás is killed. It’s heavily implied that Gus ordered the hit, but the show didn’t make it explicit.

Kim Might Break Bad

Kim Wexler in Better Call Saul

Kim’s finger-guns moment in the fifth-season finale of Better Call Saul — after proposing an unforgivable scam against Howard — suggested that she’s about to break bad.

Fans have been expecting Kim to die because she wasn’t seen in Breaking Bad, but maybe she was running her own scams off-screen. We only ever saw Saul in connection to Walt and Jesse. If he wasn’t in his office, he was usually with them. Kim could’ve been off doing her own illicit dealings.

Walter White Might Make An Appearance

Bryan Cranston wears a hat and looks in the distance in Breaking Bad.

The most obvious way that Better Call Saul could connect to Breaking Bad is with an appearance by Bryan Cranston as Walter White. His cameo in El Camino already proved Cranston can reprise the role without tarnishing Walt’s perfect character arc from Breaking Bad.

In exploring the transition between the height of Saul Goodman’s reign and his disappearance to start a new life in Nebraska, Better Call Saul will need to feature the client whose crimes brought Saul down: the mighty Heisenberg.

NEXT: Better Call Saul: 10 Predictions For The Final Season