Rico 'Rashid' Gedel, 25, is one of two men charged with murdering the disgraced rock singer, 48, at HMP Wakefield, West Yorkshire, in October last year.
Samuel Dodsworth, 43, appeared via video link at Leeds Crown Court for a hearing alongside his co-accused, Rashid Gedel, 25, referred to in court as Rico Gedel.
West Yorkshire Police confirmed that prisoners Mark Fellows, 45, Lee Newell, 56, and David Taylor, 63, have each been charged with the murder of Kyle Bevan, 33, at HMP Wakefield.
Podcaster Fearne, 44, and Watkins, 48, dated briefly in the early 2000s before his horrific crimes were revealed. She has never publicly commented on her involvement with him.