Mars was generally outgoing and friendly and is shown to encourage and inform other celestial bodies. When he meets Titan, for instance, he lists off his geological features and admires him for his interesting physique, and he also encourages Mercury to stand up for himself when Venus bullies him. Despite his friendly demeanor, he can be quite ignorant and jumps to conclusions at times, not realizing why Earth could be acting the way he is even though they were best friends for some time.