• 
  Sara Harris Davies

   Eryl (1 episode, 2015)
• 
  Ioan Hefin

   Norman (1 episode, 2015)
• 
  Ceri Bostock

   Einir Pugh (1 episode, 2015)
• 
  Geraint Morgan

   Geraint (1 episode, 2015)
• 
  Rebecca Trehearn

   Karen (1 episode, 2015)
• 
  Carwyn Jones

   Garmon Ellis (1 episode, 2015)
• 
  Rhodri Sion

   Gwyn (1 episode, 2015)
• 
  Sion Pritchard

   Iestyn (1 episode, 2015)

• 
  Lois Meleri-Jones

   Llinos (1 episode, 2015)
• 
  Martin Thomas

   Mark Smith (1 episode, 2015)
• 
  Mark Stuart

   Dwayne (1 episode, 2015)
• 
  Elen Roberts

   Anna Ellis (1 episode, 2015)
• 
  Neil Williams

   Penri (1 episode, 2015)
• 
  Mark Stuart

   Dwayne (5 episodes, 2015)
• 
  Dyfed Cynan

   Iolo (3 episodes, 2015)

• 
  Lara Catrin

   Sioned (5 episodes, 2015-2016)
• 
  Dafydd Emyr

  Huw Plismon
• 
  Nia Ceidiog

  Elinor
• 
  Owain Arthur

  Tony Edwards
• 
  Owen Arwyn

  Gavin Stokes
• 
  Sion Emyr

  Aaron Edwards
• 
  Carys Gwillym

  Emma Meredith
• 
  Mari Rowland Hughes

  Marian