Protectron No. 446

Also, this particular Protectron number: 446 is heavily damaged and missing an arm, his robotic voice is distorted and barely understandable.

Hull and armor

The main body is made of thick steel panels, painted in:
dirty yellow / mustard color
with strong signs of wear: chips, rust, abrasions
The panels are secured with large bolts and rivets, highlighting their pre-war industrial origins.
Often present on the chest:
factory markings
model number
RobCo logo (sometimes erased or partially damaged)
The case looks sealed, but rough - no elegance, just functionality.

Head

The head is small and cylindrical, set into the shoulders.
The face consists of:
two round glowing eyes (usually white-blue)
a simple grille or panel instead of a mouth
Facial expressions are completely absent - the expression is always equally emotionless.
When turning the head, mechanical jerks are noticeable, highlighting the outdated electronics.

Hands

The arms are long and heavy, with open mechanical joints.
The shoulders are articulated, the elbows are rough, without shrouds.
Brushes:
three-fingered or pincer-like
designed for gripping tools, not fine work
The following may be visible on the forearms:
cables
hydraulic elements
technological seams

Legs and gait

The legs are straight, massive, with wide metal feet.
The feet are flat and stable, like those of construction equipment.
Gait:
slow
heavy
accompanied by a characteristic metallic clang and servo-driven hum
Each step looks as if the robot weighs several hundred kilograms.

Details and atmosphere

The surface of the case is almost always:
dirty
dusty
covered with traces of decades of neglect
Often seen:
faded warning signs
industrial safety strips
peeling paint along the edges of the panels
Visually, Protectron looks like a living museum exhibit of pre-war automation, stuck in an endless cycle of performing long-obsolete tasks.