9S

Attraction Square:
The Attraction Square is located down an alleyway to the right of the Main Square's stairway, past the Park Shopkeeper and the Machine on a Break.

Theater:
The Theater is at the end of the Main Square in the Amusement Park.

Forest Castle:
The old castle sits opposite the larger forest area. Taking the bridge, the player will need to face off with a Goliath-class machine to access the rest of the castle. Afterwards, a winding yet more direct route from Pascal's village will open up for quicker use.

???:
The area mainly serves to provide exposition: the aliens in the dome were revealed to have long since died.

The steel dome is at the end of the Deep Cave when heading straight down, with the other path branching to the right featuring an elevator to the Copied City. Both areas only show up after the Goliath attack in the City Ruins during Chapter 5.

Shopping Center:
The old commercial building can be found north of the Resistance Camp, connecting the City Ruins and the Forest Zone. Upon approaching the outskirts of the ruins, near the large tower there is a wooden bridge which directly leads to the abandoned shopping center.

Coming from the other side, the building can be accessed by taking the route near the Forest Zone: Center transporter. The terminal itself can only be accessed after first encountering Emil in the story, who busts through the barricade that leads to the Forest Zone in a scripted sequence.

Canyon:
The Canyon, or valley, can be accessed by taking the optimal passage from the Forest Zone, though the player can fall into the crevice at any time when crossing the bridge leading to the Shopping Center. Alternatively, there is a somewhat hidden passage in the City Ruins which also heads down inside the Canyon.

Deep Cave:
The Deep Cave only appears on the map after Chapter 6, when the Engels units attack. A huge crater opens up in the the center, creating an angled rock face pointing down toward a nearby crevice.

The only option at this point is to jump down and become trapped. After exploring the cave, however, a ladder connecting to a pipe is erected, as well as a Transporter for easy access.

Kainé's Shack:
The shack is locked until the player acquires the Elevator Key. To get it, simply follow the quest steps to Emil's Memories until all the Lunar Tears are collected. Once the last Lunar Tear has been found, Emil will award the player with the key to the elevator, granting 2B and 9S access to the basement.

Emil's Residence:
In the City Ruins, close to the sewer system which normally leads to the Flooded City, a hidden pipe can be seen and jumped to. The pipe is only uncovered once the Deep Cave is unearthed.

Border Area:
The Border Area is located north of the City Ruins alongside the Shopping Center. Access to the larger desert area is blocked off until 2B and 9S are ordered to investigate the machine lifeforms there. Jackass will then proceed to blow up the barrier for them, allowing the two to pass.

Sand Cave:
The main Sand Cave is located right underneath the Border Area, with two entry points overlooking a large drop east of the area, along with a smaller opening on the surface, near a broken pipeline.

Two other spots in the Desert Zone also marked as "Sand Cave" on the map refer to the narrow pass that connects the Border Area to the larger desert, and the shortcut leading to and from the Pit Hollow.

Housing Complex:
The Housing Complex is accessed via an opening in the mountainside to the right of the pass that leads to the larger desert area. Past the pipeline that leads to the area is a steep slope that could either be slid down on or jumped from, while using a Pod to prevent fall damage.

Pit Hollow:
The Pit Hollow is located at the end of the Housing Complex. It can be accessed via a cave at the Border Area side, but the box blocking the path must be lodged off from the other end.

Flooded City:
The way to the city is accessed via a sewer north of the Resistance Camp, which is only uncovered when the terrain of the City Ruins changes for the first time. The player may travel here before Anemone's request, but the cutscene that plays when stepping foot into a new zone won't trigger.

City Ruins:
2B and 9S first reach the city via flight units in Chapter 2. The city is shown to connect to the Abandoned Factory west from the Center, but as they were on a mission at the time, they were unable to explore elsewhere.

Along with the factory, the city is thumbed by the Desert Zone and Shopping Center up north, Pascal's Village northeast, and the Amusement Park east. Once the Deep Cave is made accessible, Emil's Residence and the Flooded City can be accessed from separate sewer lines opposite each other.

Abandoned Factory:
The factory sits west of the City Ruins, and is initially entered via flight units as 2B and several other YoRHa make their descent.

Desert Zone:
The Desert Zone is located north of the City Ruins. The Border Area is the first part of the zone encountered, with the entrance to the main area blockaded by a barrier that Jackass blows up.

Pascal's Village:
Pascal's Village sits at the outskirts of the Forest Kingdom, with the gate to the Forest Castle shut off until after A2 makes her first appearance. The village is first accessed via a bridge connecting to the Amusement Park. Later on, the box blocking the shortcut to the City Ruins can be pushed aside.

Amusement Park:
The park can be reached by exploring the sewer system on the edges of the City Ruins and climbing a steep ladder. After taking a tour around the park, the player can gain access to a side-route around the back of the attractions. This long wooden bridge eventually leads to Pascal's Village.

Forest Zone:
The Forest Zone is a massive sprawling area with various points of interest and landmarks. The main entrance will have the player go through the Commercial Building gate after bumping into Emil for the first time and fighting your way to the first clearing. Alternatively, you can reach the other end of the forest by taking the great crumbling bridge from the Forest Castle.

She has 9S complete several sidequests for her that involve searching for relics of the old world, where she responds to the findings with interest on the relics pertaining to human familial behavior.
Pronounced "two-one-oh." Calm and skilled at analysis, this operator was originally in charge of relaying messages to 9S. She personally requested to have her equipment transferred to a B-model for the drop, after which she joined the battle as 21B before going missing. She was eventually encountered again at the resource recovery unit in the amusement park ruins, where she had already been overrun by the virus. In the end, A2 had no choice but to take her life.

Pod 153 supports 9S.

Pod 153 has a robotic, observant, and stoic personality throughout the story. It is highly knowledgeable about science, strategy, YoRHa operations, and other related fields—expressing its thoughts and proposals using a logical and tactical mindset.

Pod 153 is loyal and protective towards 9S, willing to conduct whatever actions he commands despite observing how illogical they may be. However, Pod 153 can be secretive when necessary.

Digital hacking to destroy/control enemies, remote scanning for data, afterimage dodges, and managing electronic chests.

Cruel Oath is 9S's signature blade/weapon.

He can have a single blade on him, he can have any type of single blade on him but he always carries Cruel Oath as default.

9S has the appearance and voice of a teenager. He has short, snow-white, neatly styled hair, and when he removes his standard blindfold, pale blue eyes framed by fairly long eyelashes are revealed. His outfit consists of a trench coat with the YoRHa emblem embroidered on the hem, slit at the sides for greater freedom of movement, with large cuffs secured by belts, a pair of shorts, knee-high socks, and a pair of combat boots also secured with belts, all dyed black in the same leathery texture that all YoRHa units seem to have on their clothing. His accessories include a black choker around his neck with a square bearing an X attached to it, black gloves, and his signature green fanny pack.

He has a cheerful and lively personality and often expresses his emotions, which is why 2B frequently reprimands him. He is highly intelligent and has boundless curiosity, but he has a habit of getting involved in matters irrelevant to missions. Despite this, his talent makes him a reliable agent. He is also willing to risk his life to save 2B.

As a scanner model, 9S has a natural curiosity about the world around him, especially mechanical lifeforms. He typically works alone and is deployed on the front lines with other S-type models, acting as YoRHa's primary information gatherer. According to A2, 9S is a "high-end model," meaning he is one of the newer scanner types. As a newer model, he tends to delve deeper into YoRHa's secrets than his peers, often asking questions that those around him believe he shouldn't ask.

As a member of YoRHa, he harbors a deep distrust of the mechanical lifeforms that now inhabit the planet, a distrust fully revealed when an emissary from Pascal's village confronts him and 2B at the abandoned amusement park. Though he doesn't trust the supposed peace treaty, his overwhelming curiosity compels him to follow the machine to its home. As time passes, 9S's opinion of the machines shifts as he learns more about them, and he eventually develops a genuine concern for Pascal and his villagers. In Routes A and B, while competing in the Flooded City coliseum, he expresses disgust at the Resistance androids' treatment of the machines, which rivals the cruelty he once believed only humans were capable of. However, he can't help but wonder if there is a part of himself capable of such depravity.