The homeworld of an advanced race with technology more than 3,000 beyond Earth's.
The Armored Planet is a dying planet where all major life forms are dead or dying. Once a thriving home for all manner of life, at the start of the series it is home to two humans and numerous small bugs that are able to survive of of the plant life there.
The citizens of the armored planet were originally kindhearted people who didn't want to see the weak preyed on by the strong. To make this a reality, they covered every life form on the planet in armor. While this indeed protected the weak, it led to a situation where no animal was preyed on and all life on the planet began to wither away due to a lack of food sources.