Crichton based Grant on the paleontologist
Jack Horner. Grant's scientific achievements, including the first description of maiasaurs, are actually those of Horner and Robert R. Makela. Grant has also been compared to paleontologist
Philip J. Currie.
Jurassic Park film adaptation For the 1993 film adaptation, Grant's introverted personality and dislike of children were implemented because director
Steven Spielberg wanted to "provide a source of dramatic tension that did not exist in the novel". Screenwriter
David Koepp stated that while the book was able to pull off having a lead character without a personal issue, the medium of film required the audience to have an emotional investment, so Grant's dislike of children was invented.
Sam Neill was one of Spielberg's first choices to play the role, although he was busy filming
Family Pictures.
Richard Dreyfuss and
Kurt Russell seemed like obvious choices to Spielberg – the former having worked with him on
Jaws (1975) – although he considered them both too expensive.
Tim Robbins and
Harrison Ford received offers to play Grant. Ford had previously worked with Spielberg, portraying
Indiana Jones in several films during the 1980s. Ford received a copy of the
Jurassic Park script, but according to Spielberg, he "just said . . . at this point in his life and career, this wasn't his cup of tea". The role was also offered to
William Hurt, but he declined it before reading the script, with Spielberg again saying that "it didn't sound like the kind of movie he would be interested in making at this time in his life". with the start of production being adjusted to fit his schedule. Horner coached Neill on his acting performance. The men crafted an offscreen backstory for the character; according to Neill, Spielberg had decided that Grant "didn't have to be American, that perhaps he was from Australia and had lived here a long time." Neill himself said that he envisioned Grant as "someone who had graduated from an American university and had stayed in America his entire career." Neill said this was "a completely appropriate age difference for a leading man and lady" at the time.
Jurassic Park III, released in 2001, marked the first time that Neill had reprised one of his roles. Reviews had been critical of the characters in the first film, saying, "I was so over-awed by Spielberg; I think I didn't quite look after my guy [Grant] as well as I might have". Neill reprised the role in order to get it "right this time", Neill was satisfied with his new performance, but found the role to be more physical than his previous films, as it included climbing, jumping, running, and swimming. An early story idea, devised by executive producer Spielberg, had involved Grant living on one of
InGen's islands. According to Johnston: "He'd snuck in, after not being allowed in to research the dinosaurs, and was living in a tree like
Robinson Crusoe. But I couldn't imagine this guy wanting to get back on any island that had dinosaurs in it after the first movie". In a rejected draft, Grant is seeking donors to finance the construction of a raptor research station on Isla Sorna. Johnston also found this idea contrived. Neill was saddened by the break-up of Grant and Sattler, but said that his character was so "anti-child in the first film she needed someone else". However, Johnston said: "I didn't want to see them as a couple anymore. For one thing, I don't think they look like a couple. It would be uncomfortable to still see them together. And Laura Dern doesn't look like she's aged for the past fifteen years!" However, the project was delayed multiple times, eventually releasing in 2015 as
Jurassic World. Neill and Dern do not appear in the film, which introduces new cast members.
Colin Trevorrow, the film's director and co-writer, did not want to feature Grant or other original characters without a compelling reason to involve them in the story. Neill and Dern eventually reprised their roles for
Return to Jurassic Park, a
downloadable content (DLC) pack released in 2019 for the game
Jurassic World Evolution. The two lent their voices, but had to record their lines separately due to scheduling conflicts. It was also announced in 2019 that Neill, Dern, and Malcolm actor
Jeff Goldblum would return in
Jurassic World Dominion, which released three years later. It marked the trio's first appearance together since the original
Jurassic Park film. Trevorrow returned as director and co-writer, and the actors collaborated with him on their character portrayal. They were not interested in reprising their characters simply for a cameo, Trevorrow considered the actors to be the ultimate authority on their characters. Neill said about Grant, "People don't change that much. And he's not one to change. He's as ordinary and grumpy as ever". and compared Grant to a pair of old boots: "They've seen better days, but they're really comfortable, and there's no way you'll get rid of those". Trevorrow, Dern and Neill were in agreement on having Grant and Sattler reunite as a couple. Neill explained that Grant's love for Sattler is what motivates him to get involved in the film's storyline: "He's missed her all these years, and the opportunity to spend time with Ellie Sattler…that's what really keeps Alan going. He's happy to be with her, even if it means finding yourself in great jeopardy from time to time". Dern watched
Jurassic Park again prior to filming
Jurassic World Dominion, though Neill had not seen it since the initial press tour in 1993. For
Dominion, Neill planned to prepare for the role by getting into physical shape, as the film would include running. One scene in particular has the cast fleeing from an animatronic dinosaur. Neill, being the oldest cast member, questioned whether he could keep up with the others, though he ultimately prevailed. Neill did not view Grant as an action hero, instead calling him an ordinary person thrown into extraordinary situations throughout the film series. In
Dominion, Grant has brief exchanges with Owen, who previously managed to train raptors. According to Neill, Grant has a mixed opinion of Owen, being partially critical of his work with raptors. He believes the two characters also have "quite a bit in common" because of their empathy with dinosaurs, while noting, "We didn't probably quite make enough of that. But I think it's an interesting dynamic". However, they did reprise their roles for the
Dominion Biosyn Expansion, another DLC pack. It was produced for the game
Jurassic World Evolution 2, and was released on June 14, 2022, shortly after the theatrical release of
Dominion. ==Reception==