Chapter 9 of Stray is titled Antvillage and involves visiting a village of peaceful machines. The walkthrough in our guide describes where Zbaltazar is, how to unlock full interaction with the B-12 drone, and properly leave the machine village on your way to Midtown.
Exploring the village and meeting Zbaltazar
You will reach the machines' village right after you leave the sewers you explore in chapter 8. You will be greeted by Baladin at the entrance to the village, from whom you will learn about Zbaltazar. There are no threats in the machines' village.
Walk over the drawbridge. A conversation with B-12 will start, and interactions with the drone and inventory will be temporarily unavailable. This will not last long.
If you want to explore the village, wait until the B-12 is fully operational again. Otherwise, you won't be able to communicate with the robots in the village (no dialogue translation).
You have to move towards the higher levels of the village. In the beginning, you can use ladders to do this, but for the last level, you have to jump on the objects next to the wall, to the left of the ladder.
You will find Zbaltazar and talk to him. You will learn about Clementine's whereabouts and receive Clementine's Picture with the address. B-12 will be fully operational again.
Getting to Midtown
You must continue climbing in the machines' village. You will find another ladder, but you also jump on the little pipes with yellow stripes. Even further, you will find crates that you can jump onto.
Finally, walk over the larger pipes. They lead to the metro station, and this is where you will start Chapter 10.