Jack, along with his 19-year-old sister Sophie Perry, were children to Luke and his ex-wife Rachel "Minnie" Sharp - who were married for 10 years.
Prior to his death, Luke was engaged to former actress and current family therapist, Wendy Madison Bauer.
In a statement to People in March, Bauer thanked Luke's fans for their heartfelt messages and the overwhelming amount of love and support following his passing.
Jack - who is also known as the Tarzan-esque character, Jungle Boy - previously opened up about what it was like mourning someone in the public eye.
"I think everybody’s just doing the best they can and kind of taking it day by day," Jack told People in May.
"It was kind of wild because there was this private thing obviously for me and family, but, at the same time, the whole world was kind of involved," the professional wrestler added.
In July, Jack climbed a giant billboard featuring Luke for the Once Upon a Time in Hollywood premiere in LA as a tribute to his father.
Luke played Canadian actor Wayne Maunder in the Quentin Tarantino film.
"Big premiere tonight. He deserved this, and I’m very proud of it. A stud in life, and forever after. The best of the best. Love you forever," Jack wrote in the caption of a video he shared of his climb to the top.
WATCH: Luke Perry’s son Jack shares emotional reaction to his last film, Once Upon A Time In Hollywood
Jack explained his reason for scaling the billboard to Entertainment Tonight, saying "I like climbing stuff and I saw it there. I just wanted to - it will only be there for so long and I kind of wanted to commemorate it being there forever in a way and it's kind of just my natural thing to go climb on stuff."
The 21-year-old said that while he didn't entirely relate to the global mourning that followed his father's death, he still appreciated it.
"I think everyone gets it in their own way."
Jack also expressed that he was proud of his dad for being a good person.
'The thing that I'm most proud of about my dad, always, is that he was a really good guy,' he said.