Phobos is the smaller, white one, and he is slightly smarter that Deimos,
Deimos is the bigger brown one, and he is more aggressive than Phobos,

The 2 moons get along, and don’t take kindly to people who make fun of them about their size, 
And are somewhat hard to become friends with, but they do enjoy people who are similar to them
They both are usually the aggressors in a fight, and are dense and egotistical when meeting new people
And the usually are insulting towards strangers
