There aren't only 6 demons. Depending on what religion you're using for your source, there are anywhere from 24 (Catholics calculate at least one major demon for every hour of the day) to millions.
Edit: Everyone is a demon. It is near for humans to realize that.
Castle - 2009 Demons 4-6 is rated/received certificates of: Netherlands:12
no, ouija boards don't only call demons, they can call good spirits too.
Diving Demons - 1940 was released on: USA: 6 September 1940
Clash of demons
Demons - 2009 Nothing Like Nebraska 1-6 is rated/received certificates of: Australia:M
Party of Five - 1994 Wrestling Demons 6-4 was released on: USA: 26 October 1999
Da Vinci's Demons - 2013 The Devil 1-6 is rated/received certificates of: Netherlands:12
Packed to the Rafters - 2008 Facing Demons 1-6 is rated/received certificates of: Netherlands:12
Wild Scene Investigation - 2012 Attic Demons 1-6 was released on: USA: 2012
6
Insane Coaster Wars - 2012 Speed Demons 1-6 was released on: USA: 5 August 2012
Party of Five - 1994 Wrestling Demons 6-4 is rated/received certificates of: Argentina:13 USA:TV-PG