His storylines have included re-connecting with his brother, fighting a gambling addiction, developing relationships with Elle Robinson (Pippa Black), Stephanie Scully (Carla Bonner), Emilia Jovanovic (Freya Stafford) and Vanessa Villante (Alin Sumarwata) being injured in a motorbike accident, getting involved in illegal street racing, becoming a father and being diagnosed with testicular cancer.

Scott Major received the call to join the cast of Neighbours not long after he had returned home to Australia, after working overseas.

[11] Lucas and Libby meet at the local bar, Charlie's, but he fails to secure a date with her leading to his friends playing a joke on him.

[13] The couple get back together, but when Elle discovers that Lucas has withdrawn a large amount of money, she worries that he has started gambling again.

[14] Elle accepts, but she is late offered a job in New York and Lucas tells her to follow her dreams and they say goodbye at the airport.

[14] During an interview with Daniel Kilkelly of Digital Spy in March 2011, Major said that he missed the Lucas and Elle storylines, particularly when they both worked for the Erinsborough News.

[2] Lucas is initially unaware Emilia is Michael Williams' (Sandy Winton) sister-in-law, but Major said when he discovers how they know each other, it is not a big deal to him.

"[2] Lucas and Emilia's relationship progresses and they decide to give in to their "simmering passion" after sneaking into Toadfish Rebecchi's (Ryan Moloney) house.

"[20] Lucas hopes to reconcile with Emilia when he notices her acting strangely towards him, but he is shocked and devastated when he discovers she is in a relationship with Michael.

[21] Following his break up with Emilia, Lucas meets Vanessa Villante (Alin Sumarwata), who makes an instant impression on him.

[23] However, a few weeks later Lucas finds Vanessa waiting for him in his kitchen, just as he brings home Nadia Wiseman (Amy Costa) from Charlie's.

[23][24] Susan Hill of the Daily Star quipped "The carefree lad can't believe their steamy one-night stand led to this.

[26] Major told TV Weeks' Jackie Brygel "Lucas realises he has to man up and make some bold decisions.

[8] Major told Digital Spy that the street racing storyline gave him the chance to explore the darker side of Lucas.

He's found Lucas's white blood cell count is quite high, which could be an indicator of an immune deficiency problem and may even be cancer.

[27] Major hoped the episodes featuring Lucas's cancer diagnosis would help raise awareness of "early detection and future research.

[28] Major said "I think it is very important to raise awareness of all kinds of cancer so to use a platform like Neighbours, which has millions of viewers, worldwide is a fantastic opportunity.

[29] Major explained that the producers had told him that Lucas had run his course, but they did not want him to leave and offered him the opportunity to direct some episodes of the show.

[30] After Lucas suffers a gambling relapse, he and Vanessa hold a commitment ceremony at Charlie's and take a honeymoon in the country.

[36] Lucas returned on 8 February 2019, as he visits the garage and listens to a sales pitch from Melissa Lohan (Jacqui Purvis), who wishes to buy it.

[39] On 9 May 2022, Susannah Alexander of Digital Spy confirmed Major would reprise the role for a brief appearance during the show's final episode.

When Johnno causes a car crash, which claims the life of Bridget Parker (Eloise Mignon), Lucas blames himself and starts to self-destruct.

The Hamilton Group offer Lucas a large sum of money for his garage, so they can build a car park on it for their new shopping complex.

Months later, Lucas brings his nephew Adam Fitzgerald (Archie Campbell) to Erinsborough, so he can spend the afternoon with Steph.

Lucas tells mechanic, Bea Nilsson, that he is not planning to sell the garage just yet, and will hire a new manager for a one-month trial instead.

Two years later, Lucas fires Bea after she searches through files found in Sheila Canning's (Shareena Clanton) car, which she was meant to be servicing.

[5] A Daily Record reporter observed that Lucas' relationship with Elle was becoming more epic than "Doctor Zhivago, Romeo and Juliet or The Thorn Birds.

"[45] Of the character's reaction to receiving a large inheritance, a writer for the paper said "It's hard to find any sympathy with Lucas at the minute - he's suddenly rolling in money, but he'd rather not have it.

[47] Cameron Adams of the Herald Sun said Lucas went to "some rather extreme lengths" to win over Emilia when he posed naked with a toolbox for her.

"[49] Claire Crick from the same publication commented on Lucas' baby drama, saying "Here at All About Soap, we'd love to see him be a dad (and get a hair cut – but that's a whole other matter entirely!)