Complex sentence: Lance's personality is outwardly very egotistical, cocky, confrontational, flirtatious, and sometimes downright arrogant and he's usually the first to make light of a delicate situation.
Split into simpler sentences: Lance's personality is outwardly very egotistical, cocky, confrontational, flirtatious, and sometimes downright arrogant. He's usually the first to make light of a delicate situation.