Castro was sentenced Aug. 1 to life in prison plus 1,000 years on his guilty plea to 937 counts including kidnapping and rape.
A plea deal struck last week spared him from a possible death sentence for beating and starving a pregnant victim until she miscarried.
St. Louis rapper calls Amanda Berry onstage at Cleveland concert.
The Cleveland man accused of holding three women captive has agreed to plead guilty to avoid the death penalty.
Ariel Castro looked down at the ground for almost the entire proceeding, biting his collar and signing documents with his handcuffed hands.