On Thursday, Castleberry arrived at the Harris County jail escorted by Secret Service agents.
Castleberry was living in Thailand as a fugitive, where he was arrested last month.
Prosecutors allege he raped four girls and videotaped those sex acts. He faces four counts of aggravated sexual assault of a child.
Castleberry's first court date has not been set.
Slideshow archive | ABC13 wireless | Help solve crimes