Complex sentence: Another notable speedster is Quicksilver who has been on The Avengers roster, and has had conflicts with the X-Men The quicksilver isn't connected to the Speed Force like members of The Flash family.
Split into simpler sentences: Another notable speedster is Quicksilver who has been on The Avengers roster, and has had conflicts with the X-Men. Quicksilver isn't connected to a Speed Force, like members of The Flash family.