gratuitous

adjective3

1. •
   Given freely; unearned.
2. •
   Unjustified or unnecessary; not called for by the circumstances.

   • Good to see you Mr. Bond. Things've been awfully dull 'round here. […] Now you're on this. I hope we're going to have some gratuitous sex and violence! — 1983
3. •
   extraneous, interpolated.