"It builds upon the characters and themes established in the first book in exciting ways, and takes an even harder turn into horror than the first book that really sets this apart from the other Marvel books being produced by Aconyte. An absolute must read for anyone who's a fan of Doctor Doom."

– Trans-Scribe, on Marvel Untold: Reign of the Devourer

"This novel is a sequel to Annandale's The Harrowing of Doom which came out in early 2021. While the rest of the Marvel world views him as a villain, to the people of Latveria he is a "hero". And when his kingdom and subjects are treatened by a powerful, evil entity, he rises to the challenge as a protector. This is why Doom is one of my favorite Marvel villains - because he is so complex. Once again, the reader is treated to a wonderful portrayal of Doctor Doom; Annandale captures those multifacets perfectly. When Doom is advising those around him to push further, to challenge their own limits, he shows the redeemable qualities of his personality."

– Martin’s View, on Marvel Untold: Reign of the Devourer

"Doom views his nation as an extension of himself such that to attack his people is to attack him. Annadale handles Doom brilliantly this way, taking what could easily be a flat character and giving him depth and pathos. Likewise, Annandale does a good job breathing life into Doom’s supporting cast, and I found myself interested in their individual stories as well."

– Grimdark Magazine, on Marvel Untold: Reign of the Devourer

"Annandale perfectly captures the soul of the character …. Reign of the Devourer is a worthy sequel to The Harrowing of Doom and I hope that Annandale continues to tell stories of Doom in the Marvel Untold universe."

– POP Goes the Culture, on Marvel Untold: Reign of the Devourer