Warning! This article contains SPOILERS for The Last of Us episode 9 and The Last of Us Part II.The Last of Us is officially welcoming Abby as the cast and crew begin to prepare for season 2. With Joel (Pedro Pescal) and Ellie (Bella Ramsey) finally done with their journey, the Fireflies have been decimated. Now, the two are ready to settle in Jackson as they start to learn to live a life without quite as much violence. Unfortunately, it won't last.

In an Instagram post, co-creator and showrunner Neil Druckmann is officially teasing the appearance of The Last of Us Part II's Abby. Check out his post below:

With Abby on the way, The Last of Us season 2 is getting ready to show why Joel shouldn't have killed that doctor. After butchering the last people attempting to find a cure for the Cordyceps infection, Joel is going to learn a lesson in vengeance.

Related: What The Last Of Us Streaming Numbers Beating A HBO Record Means For S2

Why Abby Is So Important To The Last Of Us

Abby in The Last of Us 2

The daughter of the Fireflies' doctor, Abby appears in The Last of Us Part II on a quest for vengeance. After helping the Washington Liberation Front free Seattle from FEDRA, Abby becomes a paramount figure in the organization. She rallies for support in order to send a search party after her father's killer, and then she charges after Jackson.

Abby's appearance wreaks absolute havoc on the lives of Ellie and Joel after Abby brutally murders the man. Joel dies in front of Ellie, and Ellie is blinded by hatred. The Last of Us season 2 will likely follow the aftermath of Abby's attack, after an enraged Ellie roars after her to seek vengeance for her own father figure. It's the continuation of a cycle of violence that is at the core of The Last of Us Part II.

If The Last of Us season 1 centers on love, then season 2 will likely focus on the concept of hate. Abby's hatred of Joel consumes her until the vengeance quest is all that she knows. Ellie's hatred of Abby does the same, as she desperately takes every measure to kill the other woman. The Last of Us season 1 ends with Ellie at Joel's side, and Abby will ensure that Ellie will have to again wrestle with being alone.

More: The Last Of Us' 2 Best Episodes Aren't About Joel (& That's The Point)Source: Neil Druckmann / Instagram