Exec-Bot

The Exec-Bot is an enemy encountered in System Shock.

Overview
"Suitable for luxury servitude or simple systems analyses, this semi-intelligent robot with stylish humanoid appearance meets strictest quality guidelines for general-purpose robots. Originally designed as a bodyguard for executives, the exec-bot has built-in armament."

- Catalog of Robotic Assistants on Citadel Station

As their name implies, these bots are found most commonly on the Executive Level. They use projectile weapons and are quite heavily armored.

Strategy
A Magnum Pistol with Heavy Slugs is recommended to dispatch them at the very least, and the Mag-Pulse Rifle is highly recommended. Be cautious when you first encounter them, as you won't have had the opportunity to acquire an Energy/Projectile Shield, and they can dish out damage quite as well as they take it.

If you're more a fan of energy weapons you'll definitely want to trade out your trusty SparqBeam for something heavier ; even on Overload you simply won't be doing enough damage per shot. Exec-Bots also tend to be found near one or more other Cyborgs. If they are together close enough, an EMP grenade might be a good idea for "group therapy".