Antonio "L.A." Reid

The X Factor sneak peek.

The X Factor sneak peek.

The X Factor sneak peek.

X Factor sneak peek

The X Factor sneak peek.

X-Factor interviews with Xfinity TV

Sneak peek of The X Factor

X-Factor sneak peek

Demi's group is thrilled to have her as their mentor.

Simon's unique experience shepherding bands such as One Direction makes him the ideal mentor.

Despite not wanting to mentor the Over 25s at first, LA is ready for the challenge.

Britney is the perfect choice to mentor the teens because she's been in their shoes.