He has been remanded in custody until 20 March when a case management hearing will take place at Bristol Crown Court.
The 17-year-old, and a 14-year-old boy who has pleaded not guilty to murder and manslaughter in relation to this incident, are due to attend.
A date for the trial has been set for 5 June.
We are your go-to destination for breaking UK news, real-life stories from communities across the country, striking images, and must-see video from the heart of the action.
Follow us on Facebook at for the latest updates and developing stories, and stay connected on X (Twitter) the for live coverage as news breaks across the UK.