Luke also thanked his friends, family and team who have supported him over this "long journey", and that this is where the work starts.
"Look out for Xander on screens in 2022," he added.
His character Xander is said to be "a mysterious individual who arrives in the Bay searching for answers".
Xander has also been teased to be a relative of a Summer Bay favourite, with details on who exactly that may be yet to be revealed.
Luke, who is related to Chris and his brothers through his father, who is the brother of their mother Leonie, revealed to The Daily Telegraph how his famous cousin helped him for his Home and Away audition.
"When I was asked for a callback for the chemistry test, I actually zoomed with Chris the night before and we ran it (the scene) and kind of just got into a good headspace," he told the publication.
"His advice was be nice, put in the work and the work doesn’t end now, if anything this is when you need to work hard."
The 24-year-old, who has appeared in films Banana Split, Dancer, Dirt Blood, and Ominous, also admitted that while he has been auditioning and acting for eight years, this is where the hard work starts.
"Acting has been my passion for such a long time and for me to be able to make a living, pay my bills and do this every day is a dream," Luke said.
"Endless people have come and done this show and gone on to have extremely long careers and I am just hoping that is what I can do, acting and making a living for as long as I can."
He also added that his cousins have "paved the way" for him as he can rely on them for insights and help throughout his career.
"I am fortunate," he said.
The actor has already begun filming scenes for the series, and seems to have made fast friends with his co-stars.
"Epic birthday dinner last night #teppanya," he captioned the post, which featured a series of snaps with everyone.
Along with the support of his new Summer Bay family, Luke will have the support of his real-life family and his girlfriend Tonia Miragliotta.