Hains had appeared in shows like The OA and American Horror Story: Hotel. He performed music under the moniker ANTIBOY.
His mother, actor Jane Badler, confirmed her son's death in a tribute posted to Instagram today. Hains died on January 7.
She said that Hains struggled with mental illness and addiction, but did not reveal his cause of death.
Badler also noted that a service will be held for Hains in Los Angeles on January 12 at 3 p.m. at Hollywood Forever.
Read the tribute to her son below.
On Jan 7 my beautiful son died . He was 27 and had the world at his feet . But sadly he struggled with mental illness and addiction . A brilliant spark shone bright too short a time .. I will miss you Harry every day of my life ... if you are in LA and know harry there is a service for him at Hollywood Forever Sunday jan 12 at 3 pm . 6000 Santa Monica Blvd .. RSVP firstname.lastname@example.org