After several years of working as a
cartographer, he began working as a comic artist at
Marvel UK, the
Britain-based imprint of
Marvel Comics. Larroca was working at Marvel UK when he contributed to
Dark Angel and ''Death's Head II.'' At some point, Larroca began to work on mainstream
North American comics, such as
DC Comics'
Flash. Afterwards, Larroca did a three-year run on Marvel Comics'
Ghost Rider, during the mid-1990s. It was not until after his run on
Ghost Rider, that Larroca would gain the exposure needed to become known as one of the most prominent comic book artists in the
United States. Following Marvel's experiment with the various "
Heroes Reborn" titles, editor
Bobbie Chase gave Larroca the task of penciling the return of
Captain America,
Iron Man,
Fantastic Four, the
Avengers, and several other superheroes, in the
Heroes Return miniseries. After the departure of
Alan Davis on
Fantastic Four, Larroca was given the reins along with writer
Chris Claremont. Larroca and Claremont had a three-year-long run on the title. Larroca left the title penciling chores in the hands of new writer/penciler,
Carlos Pacheco, while Larroca went on to do several issues of
Uncanny X-Men, after the departure of
Adam Kubert, who left to work on
Ultimate X-Men. Larroca then proceeded to rejoin with writer Chris Claremont, on
X-Treme X-Men. Larroca stayed on the title for twenty-four issues, at which point he was asked to work on the initial run of Marvel's new
Tsunami imprint title, called
Namor. Meanwhile, Larroca worked on various miniseries projects, including
Ultimate Daredevil & Elektra and
Ultimate Elektra. Larroca was asked to draw fill-in issues of
The Uncanny X-Men and
X-Men. These issues led up to the "X-Men Reload" event, as the titles gained new writers, artists, and story direction. Larroca joined with writer
Chuck Austen on
X-Men. During his run of
X-Men, Larroca took a side job drawing
Spider-Man: House of M miniseries. Larroca was drawing
X-Men, but with a new writer on the title,
Peter Milligan. He left X-Men in June and was announced to be joining Warren Ellis on
newuniversal, a remake of Marvel's
New Universe. From 2008 to 2012, Larroca illustrated writer
Matt Fraction's run on
The Invincible Iron Man. 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. In 2024, Larroca was awarded the
Inkwell Awards All-in-One Award. ==Criticism==