With sister titles including Dracula Lives!, Tales of the Zombie and Vampire Tales, it was published by Marvel Comics' parent company, Magazine Management, and related corporations, under the brand emblem Marvel Monster Group.

The painted covers were illustrated by the likes of Gray Morrow, Boris Vallejo, Neal Adams, Frank Brunner, Bob Larkin, Richard Hescox, Earl Norem, and Jose Antonio Domingo.

[10] Kei then learns how to use his powers perfectly and manages to defeat the Leviathon Queen with a team of new monsters.

[11] The third volume of Monsters Unleashed is a five-issue Marvel Comics miniseries cover-dated June-Oct.

The series unfolds as the team takes on gargantuan creatures and protects the planet while also having to deal with the latest incarnation of Intelligencia.

According to Comic Book Roundup, the entire crossover received an average rating of 6.9 out of 10 based on 48 reviews.