After starting his career as a cartographer, Larroca transitioned to working as a comics artist in the 1980s at Marvel UK, contributing to Dark Angel and Death's Head II.
His work on the former attracted criticism for his heavy reliance on tracing stills from Star Wars films, resulting in an "awkward hyperrealism" that was likened to the uncanny valley effect.
In December 2020, Marvel announced that Larroca would be teaming up with writer Phillip Kennedy Johnson on an Alien comic book series, with the first issue released in March 2021.
[9] James Whitbrook, reviewing the "Ashes of Jedha" storyline in Marvel Comics' Star Wars series for Kotaku, took issue with what he felt was Larroca's heavy reliance on tracing stills from Star Wars films when rendering the characters, which imbued the characters' faces with an "awkward hyperrealism" that he felt evoked the effect of the uncanny valley.
While Whitbrook did not observe this problem in his work on other Star Wars arcs, and praised Larroca's work in rendering large-scale elements such as starships or planets, he felt that in many closeups of the three main characters in "Jedha," the illustrations too closely mirrored the images from the films, often from scenes in which the actors' facial expressions did not match the tone or dialogue of the characters in the comic.
[1] Charlie Hall, reviewing the same storyline for Polygon, expressed the same viewpoint, and like Whitbrook, compared these renditions to the work of Angel Unzueta and Arif Prianto on the Poe Dameron series, which they felt rendered the characters to sufficiently resemble or recognizably evoke the actors who played them, without exhibiting the sense that they were "pasted" from reference materials.