Security Robot

You’re a rare type of robot entrusted with securing the safety of others. It’s also possible that you’re the exact opposite: an assassin. In either case, you’re trained in weaponry and tactics others of your kind are not usually privy to.
Age. Your species does not age. It’s possible you were constructed quite recently, but due to your programming you behave as an adult.
Computer Interface. You may plug directly into computer systems, doubling your proficiency bonus on tool use rolls for accessing information stored within that system.
Inorganic. You do not need to eat, drink, or breathe, and you do not become unconscious when you rest for the night.
Retractable Weapon. Select a mundane one-handed weapon. You begin with this weapon, which is hidden within your body until you draw it, at which point it becomes visible. As an action, you can swap out the retractable weapon for another one-handed weapon. You always count as proficient with whatever weapon is currently installed in this way.
Robotic Frame. You have resistance to slashing damage, but suffer vulnerability to electricity damage. You are immune to poison damage and cannot become poisoned. Your base armor rating is 15 + your Dexterity modifier. You may not wear armor.
Size. You are the shape of a typical humanoid, making you Medium size.

Languages. You know the language of the species that created you.