Seth Costello

Seth Costello
Hollyoaks character
Portrayed by	Miles Higson
Duration	2010–2011, 2020–2021
First appearance	Episode 2867 20 July 2010 (2010-07-20)
Last appearance	Episode 5517 2 February 2021 (2021-02-02)
Classification	Past; regular
Introduced by	Paul Marquess (2010) Bryan Kirkwood (2020)
Spin-off appearances	Hollyoaks Later (2010–2011)
In-universe information Father Carl Costello Mother Heidi Costello Brothers Riley Costello Jason Costello Half-sisters Jem Costello Grandfathers Silas Blissett Uncles Trev Costello Aunts Wendy Blissett Nephews Bobby Costello Phoenix Costello Other relatives Mitzeee Minniver Trish Minniver Maxine Minniver Minnie Minniver

Seth Costello is a fictional character from the British television soap opera Hollyoaks, played by Miles Higson. He made his first appearance during the episode broadcast on 20 July 2010. His first major storyline was in 2011 when he was the centre of a steroids storyline. He also became involved in the storyline where his father Carl Costello (Paul Opacic) began an affair with Mercedes McQueen (Jennifer Metcalfe). 2020 saw the return of Seth, when he blackmailed the McQueen family with grandfather Silas Blissett (Jeff Rawle). He departed again on 2 February 2021.