Mars

Mars is the 4th closest planet to Sol in the Solar System. He is often called  ' The Red Planet ' by Earth's inhabitants. He was once hospitable for life, but his atmosphere decreased in density and size, so all the life on it went extinct. Earth has sent some rovers to Mars, to investigate what sorts of life lived on him, besides of studying his atmosphere. He has two tiny moons, Phobos and Deimos, who are both former asteroids.

 

Personality
Mars is the 'nerd' of the solar system, but he doesn't get teased about it. He has a slight crush on Earth, and they both work together in discovering and investigating the wonders and mysteries of the universe. He's a bit shy, but goes good with the other planets. He's very curious about everything around him, just like his crush Earth. So they're very good friends. He's also very excited to receive visits from Earth's inhabitants in some years.

Appearance
Mars is a light-orange planet, with some darker brown 'seas'. He gets wrapped by a sandstorm every 3 earth-years aproximately, and his surface gets completely hidden by it. He also has frozen water and frozen carbon dioxide in his poles.