Riley Rossmo is a Canadian comic book artist and illustrator born in 1983, whose distinctive, expressionistic visual style has made him one of the more recognizable figures working across mainstream and independent comics over the past two decades.
Rossmo broke into the industry around 2006 and built his early reputation through Image Comics, where titles such as *Proof* and *Bedlam* showcased his loose, kinetic linework and a flair for the darkly surreal. That indie sensibility translated well when he moved into mainstream superhero publishing — his run on *Constantine: The Hellblazer* leaned into the occult unease the character demands, while his work on *Martian Manhunter* brought an otherworldly visual language to DC's alien detective. His tenure on *Harley Quinn* reached a wide readership, and the creator-owned *Deathbed* demonstrated his continued appetite for work with a stranger, more personal edge. He has also contributed to Marvel, including work on *Daken: Dark Wolverine*. Across more than 170 credited issues, Rossmo has worked as artist, colorist, inker, and occasionally writer, reflecting a versatility unusual even among prolific genre artists.
Beyond his publishing output, Rossmo has served as an instructor at the Alberta College of Art and Design, contributing directly to the next generation of Canadian illustrators.
Constantine: The Hellblazer (2015) · 13
Martian Manhunter (2019) · 12
Wesley Dodds: The Sandman (2023) · 7
Batman / Shadow (2017) · 6
Proof Endangered (2010) · 5
Daken: Dark Wolverine (2010) · 4
Tim Drake: Robin (2022) · 4
Cowboy Ninja Viking (2009) · 3
Dia de los Muertos (2013) · 3
Escape from New York (2014) · 2
Constantine the Hellblazer (2016) · 2
Batman / The Shadow: The Murder Geniuses (2018) · 2
Batman: Night of the Monster Men (2017) · 2
Future State: Legion of Super-Heroes (2021) · 2
Batman: The Adventures Continue Season Two (2021) · 2
Monster Pile-Up (2008) · 1
Image Firsts: Proof (2010) · 1
Silent Hill: Past Life (2010) · 1
Image Firsts: Bedlam (2013) · 1
Bloodshot and H.A.R.D.Corps (2013) · 1
Robocop: Hominem Ex Machina (2014) · 1
Clive Barker's Nightbreed (2014) · 1
And Then Emily Was Gone (2015) · 1
The Eighth Seal (2015) · 1
Constantine: Hellblazer (2016) · 1
Illuminati: Life of Crime (2016) · 1
Constantine: Hellblazer – Indigno (2016) · 1
John Constantine, Hellblazer (2011) · 1
Batman - Die Nacht der Monster-Menschen (2017) · 1
Batman Halloween Comic Fest Special Edition (2017) · 1
Dark Nights: The Batman Who Laughs (2018) · 1
Justice League: No Justice (2018) · 1
Batman & The Shadow (2018) · 1
Cursed Comics Cavalcade (2018) · 1
Justice League Dark (2018) · 1
Justice League Dark Annual (2019) · 1
Dark Nights: The Batman Who Laughs 1 (Special Edition) (2019) · 1
A Very DC Halloween (2019) · 1
Batman & the Outsiders Annual (2019) · 1
DC's Crimes of Passion (2020) · 1
Superman: Villains (2020) · 1
Martian Manhunter: Identity (2020) · 1
Legion of Super-Heroes (2020) · 1
Dark Nights: Death Metal Robin King (2020) · 1
DC The Doomed and the Damned (2020) · 1
Batman por Tom King (2021) · 1
Justice League Infinity (2021) · 1
Harley Quinn Infinite (2022) · 1
Harley Quinn: Uncovered (2023) · 1
Cruel Universe (2024) · 1
DC's Batman Smells, Robin Laid an Egg (2025) · 1
Absolute Green Lantern (2025) · 1
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