A mechanical device or entity which can either perform tasks on its own, or with guidance. In practice, a robot is usually an electro-mechanical machine guided by a computer.
This is basically the machine version of a species tag and covers robots from mindless industrial machines to fully sentient (if currently fictional) lifeforms.
Robots come in three basic types:
- Worker robots, which are often used for manual labor that is too dangerous or exact for biological laborers. Examples include be industrial robots or the Boston Dynamics "Big Dog."
- Helper robots, which are generally tools used to aid skilled professionals or carry out very specific tasks that couldn't be achieved any other way. Examples would include nano-bots and robotic surgery tables.
- Creature Analog robots, the kind most likely to grace the pages of e621. These robots are made for various reasons, but generally resemble natural creatures in some small way.