Katrina / Katrina MacKenzie (58 episodes, 2012-2017)
Jana (48 episodes, 2013-2017)
Kay (43 episodes, 2012-2016)
Mr Jeffries / Tim Jeffries / Mr. Jeffries (42 episodes, 2012-2017)
Rhydian Morris / Rhydian (40 episodes, 2012-2014)
Tom Okanawe / Tom (39 episodes, 2012-2014)
Shannon Kelly / Shannon (39 episodes, 2012-2014)
Kara (38 episodes, 2012-2016)
Liam (34 episodes, 2012-2014)
Jimi (34 episodes, 2012-2014)
Sam (34 episodes, 2012-2014)
Maddy Smith (26 episodes, 2012-2014)
TJ Cipriani (22 episodes, 2016-2017)
Matei / Matei Covaci (22 episodes, 2016-2017)
Imara / Imara Cipriani (22 episodes, 2016-2017)
Emilia / Emilia Covaci (21 episodes, 2016-2017)
Selina / Selina Khan (21 episodes, 2016-2017)
Emma (21 episodes, 2012-2014)
Daniel (20 episodes, 2012-2013)
Dr. Whitewood / Dr. Becca Whitewood (17 episodes, 2014-2017)
Ceri (16 episodes, 2012-2014)
Miss Parrish / Miss Parish (15 episodes, 2012-2014)
Aran (15 episodes, 2013-2017)
Robyn / Robin (15 episodes, 2016-2017)
Miss Fitzgerald (10 episodes, 2012-2014)
Victoria (10 episodes, 2014-2016)
Dacia (9 episodes, 2014)
Sofia / Sophia (9 episodes, 2016-2017)
Bernie (8 episodes, 2012-2013)
Alric (8 episodes, 2013-2016)
Meinir / Meinr (8 episodes, 2013-2016)
Madoc (7 episodes, 2016-2017)
Hartington (7 episodes, 2017)
Hafren (7 episodes, 2017)
Hannah (6 episodes, 2016-2017)
Adnan (6 episodes, 2016-2017)
Birdie (6 episodes, 2017)
Daisie (6 episodes, 2017)
Alex Kincaid (6 episodes, 2014)
Alistair (6 episodes, 2016)
Maurice (6 episodes, 2016)
Barry (6 episodes, 2016)
Gwyn (5 episodes, 2014-2016)
Cadwr (5 episodes, 2014-2016)
Harry Averwood (5 episodes, 2013-2014)
Mrs. Vaughan / Mrs Vaughn (5 episodes, 2013-2014)
Karen (5 episodes, 2014)
Gerwyn (4 episodes, 2014)
Jones (4 episodes, 2017)
Miss Graham (3 episodes, 2012-2014)
Ollie (3 episodes, 2014)
Grandad (3 episodes, 2017)
Carrie (3 episodes, 2016)
Niamh / Holly (2 episodes, 2016)
Dr Whitewood / Miss Whitewood (2 episodes, 2013)
Art Teacher (2 episodes, 2013-2014)
Joe (2 episodes, 2014)
Jessie (2 episodes, 2013-2014)
Ben (2 episodes, 2014)
Rob (2 episodes, 2012-2017)
Craig (2 episodes, 2014)
Zuhra (2 episodes, 2016)
Segolia Beta (2 episodes, 2016)
Jack (1 episode, 2016)
Mr Driscoll (1 episode, 2013)
Mai Lin (1 episode, 2016)
Girl (1 episode, 2014)
Alf (1 episode, 2014)
Brionny (1 episode, 2016)
Mrs Driscoll (1 episode, 2013)
Kyle (1 episode, 2012)
Jude (1 episode, 2012)
Jo (1 episode, 2012)
Steve (1 episode, 2012)
Darren (1 episode, 2016)
Tae Kwondo Double (1 episode, 2016)
DI Bolton (1 episode, 2012)
Darby (1 episode, 2013)
Tricia (1 episode, 2016)
Parkour Double (1 episode, 2016)
Store Manager (1 episode, 2016)
Mrs. Leonard (1 episode, 2017)
Dean (1 episode, 2012)
Sgt Ashford (1 episode, 2012)
Bryn (1 episode, 2012)
Scott (1 episode, 2013)
News Anchor (1 episode, 2017)
Female guest (1 episode, 2017)
Front Desk Officer (1 episode, 2012)
Mr. Chen (1 episode, 2012)
Dr Okinawa (1 episode, 2012)
Tilly (1 episode, 2012)
Paul (1 episode, 2013)
Tariq (1 episode, 2016)
Lab Technician (1 episode, 2012)
Becky (1 episode, 2012)
Year 8 Girl (1 episode, 2012)
Caretaker (1 episode, 2013)
Sian (1 episode, 2014)
Callum (1 episode, 2016)
Receptionist (1 episode, 2017)
Mr Okinawe (1 episode, 2012)
Girl (1 episode, 2017)
Year 9 Girl (1 episode, 2012)
Dr Losely (1 episode, 2014)
Footballer (1 episode, 2012)
Passerby (1 episode, 2014)
Wild Wolfpack (1 episode, 2014)
Ben (1 episode, 2014)
Dr. Jones (1 episode, 2016)
Male Guest - Fan (1 episode, 2017)
Baz (1 episode, 2017)
Cafe patron (1 episode, 2017)
Gary (1 episode, 2017)
Café Customer (1 episode, 2017)
Wild Wolf Pack / Wild Wolfblood (uncredited) (3 episodes, 2016)
Wild Wolf Pack (uncredited) (3 episodes, 2016)
Boy Being Bullied / Year 7 Child (uncredited) (2 episodes, 2013)
Wild Wolfling (uncredited) (2 episodes, 2016)
Wild Wolf Pack (uncredited) (2 episodes, 2016)
Segolia Beta (uncredited) (2 episodes, 2016)
Wild Warrior Wolf (uncredited) (2 episodes, 2016)
Enforcer (uncredited) (2 episodes, 2017)
Claire (uncredited) (1 episode, 2012)
Teacher (uncredited) (1 episode, 2012)
Cafe Customer (uncredited) (1 episode, 2014)
Wild Wolf Pack (uncredited) (1 episode, 2014)
Trapped Man (uncredited) (1 episode, 2016)
Teacher (uncredited) (1 episode, 2017)