Who is Gnaeus Pompeius Magnus from Caesar's Women and what is their importance?

Gnaeus Pompeius Magnus (Pompey the Great) is the renown, hugely successful military commander, who has conquered more land for Rome than any Roman leader before him. He is a both wealthy and popular, and he openly declares himself Rome's First Man. Because of his wealth and reputation, the boni set out to destroy him, as they are worried he has aspirations of becoming a dictator.