Name	Known for
Mark Flanagan Simon Simon See fewer	Hidden (2018)
Lowri Steffan Ruth Ruth See fewer	Parch (2015)
Mair Rowlands Helen Helen See fewer	Under Milk Wood (2015)
Richard Elis Jeff Jeff See fewer	EastEnders (1985)
Rhodri Evan Martin Martin See fewer	Cowbois Ac Injans (2006)
Saran Morgan Katie Katie See fewer	Under Milk Wood (2015)
Sion Alun Davies Alun Alun See fewer	Hidden (2018)
Nia Roberts Claire Claire See fewer	Cashback (2006)
Caitlin Richards Fran Fran See fewer	The Pact (I) (2021)
Paul Morgans Danny Danny See fewer	King of Thebes (2012)
Rhian Jones Hazel Hazel See fewer	There's a Ghost in My House (2022)
Bethan Bevan Leslie Leslie See fewer	Starter for 10 (2006)
Garmon Rhys Charlie Charlie See fewer	Hidden (2018)
Rhys Parry Jones Tim Gibson Tim Gibson See fewer	Ironclad (2011)
Gareth Milton Tudor Tudor See fewer	The Silence (III) (2013)
Dewi Rhys Williams Elfyn (as Dewi Williams) Elfyn (as Dewi Williams) See fewer	Ironclad (2011)
Glyn Pritchard Geraint Geraint See fewer	Andor (2022)
Huw Rhys Chris Chris See fewer	Doctor Who (2005)