Hollyoaks is a British television soap opera that was first broadcast on 23 October 1995. The following is a list of characters that have appeared or will appear in the serial in 2018, by order of first appearance. All characters were introduced by executive producer, Bryan Kirkwood. The first characters to be introduced were Scarlett Morgan (Susie Amy) and Oliver Morgan (Aedan Duckworth/Gabriel Clark), the estranged wife and son of Luke Morgan (Gary Lucy). Buster Smith (Nathan Sussex), the father of Damon Kinsella (Jacob Roberts), was also introduced in January. Theo Jones (Matt Kennard), the brother of Milo Entwistle (Nathan Morris), Harley Frater (Mollie Lambert), the homeless friend of Peri Lomax (Ruby O'Donnell), and Josh Bradley (Rupert Hill), the son of Ben Bradley (Ben Richards), made their debut in April. Breda McQueen (Moya Brady) and Sylver McQueen (David Tag), the mother and brother of Goldie McQueen (Chelsee Healey), and Kameela (Anu Hasan), the sister of Misbah Maalik (Harvey Virdi), first appeared in June.
July features the arrivals of Donna-Marie Quinn (Lucy-Jo Hudson), her son, Romeo (Owen Warner), Brooke Hathaway (Tylan Grant), a foster child for the Osborne family, and Asha Kaur (Rukku Nahar), the sister of Neeta Kaur (Amrit Maghera), as well as the appearance of Kashif Maalik (Nitin Patel). Martine Deveraux (Kéllé Bryan), the sister of Simone Loveday (Jacqueline Boatswain), debuts in October. Three characters were introduced in November: Laurie Shelby (Kyle Pryor), the husband of Sinead O'Connor (Stephanie Davis), Juliet Quinn (Niamh Blackshaw), Donna-Marie's daughter, and Jonny Baxter (Ray Quinn), a radicalist who befriends Ste Hay (Kieron Richardson). Simone and Martine's father, Walter Deveraux (Trevor A. Toussaint), joins the soap in December. Additionally, multiple other characters appear throughout the year.