Along with Dean, those facing aggravated robbery and murder charges are Dakota Cox, 18; Kayla Carmack, 17; and Jacob Hicks, 16.
Investigators allege they along with Mason Trudics, 18, of Centerville, attempted a robbery that ended with Trudics dead and Dean critically wounded. The target of the attempted robbery fired shots at those involved, investigators have said, and is not charged.
Carmack was scheduled for the transfer hearing on Monday, Dean on Wednesday and Hicks on Friday. No new dates were immediately available.