"Rouleau's art is especially delicious, with a detail and control that gives shape to the inky terrors lurking in the story." (Grade: A-)
— Tom McLean @ Variety
"If you want to see why the graphic novel deserves a spot on the bookshelf next to Kubla Khan and The Plague, you need to pick up this book." (3 1/2 out of 4 stars)
— Todd Callender @ Static Multimedia
A title that would easily spook horror readers, intrigue mystery lovers and generally please fans of all other genres.
— Alex Ness @ Pop Thought
"The Nightmartist is a captivating, psychological horror and supernatural romp that shows the writer/artist at his best."
— Don MacPherson @ The Fourth Rail
"'The Nightmarist' is pretty stellar stuff. Rouleau's black and white artwork is gorgeous."
— Larry Clow @ The Wire
"Those who like their comics to challenge their intellect and embrace innovation should get plenty out of it"
— Grovel
"At first glance, this didn't seem like a book I would like. Yet, I did." (4/4 stars)
— Pop Syndicate
"The kind of title you want to show and share with your friends. Just that intense." (Grade: A-)
— Carl Towns @ Paperback Reader
"The Nightmarist is the best original graphic novel released in years, and I claim this during a time when OGNs are popping out of the woodwork each and every month."
— Dave Baxter @ Broken Frontier
"The Nightmarist is truly a weird and wonderfully bizarre book."
— Greg Burgas @ Comics Should Be Good
"THE NIGHTMARIST is so bad-ass I wish *I* had published it. I've been moving them at my local shop by telling people it's 'SANDMAN directed by Michael Bay.'
But 'It's bad-ass' covers it for most people."
— Larry Young, publisher AiT/Planet Lar