Brooks Beattie. Brooks Beattie may be >> in The Dog Salesman as 'Marshall/ MJ'.Alyssa Menckhoff. Alyssa Menckhoff may be >> in The Dog Salesman as 'Beth/ Undercover Cop'.Ethan Beattie. Ethan Beattie may be >> in The Dog Salesman as 'Waiter/ Undercover Cop/ Mayor/ Governor'.Amelie Chaouat. Amelie Chaouat may be >> in The Dog Salesman as 'Old Lady'.Ethan Pennington. Ethan Pennington may be >> in The Dog Salesman as 'Prison Guard'.Tristan Upp. Tristan Upp may be >> in The Dog Salesman as 'Writer, Director, Editor'Mason Ray. Mason Ray may be >> in The Dog Salesman as 'Director of Photography, Editor'Matt Mulac. Matt Mulac may be >> in The Dog Salesman as 'Production Assistant'Emily Heavrin. Emily Heavrin may be >> in The Dog Salesman as 'Makeup Artist'