With the direct and indirect scientific assistance of
Doctor Manhattan, Veidt pours the vast resources at his disposal into the study of genetic engineering (an early success of which was
Bubastis). Meanwhile, through Dimensional Developments, he puts an equal amount of work into discovering how to replicate Jon's power of teleportation, though it is notable that the teleportation method created by Veidt is too imprecise to prevent the teleported object from reappearing in the same space as another object, resulting in an explosion;
[1] still, this only further suits Veidt's intentions. Both of these studies take nearly a decade to perfect. He also has a number of tachyon generators constructed in locations around the world to obscure Doctor Manhattan’s vision of the future in order to prevent him from taking any action against Veidt.
Once the research is completed to Veidt's satisfaction, he uses Pyramid Deliveries to transport science fiction writer
Max Shea, surrealist artist
Hira Manish, and a large number of other writers (like
James Trafford March), artists (like
Linette Paley), and scientists – who are under the impression that they were being employed as part of a top-secret movie production – to a privately owned island for a period of several months, in which time they conceptualize and engineer the monster.
The brain was created by stealing that of deceased psychic
Robert Deschaines and cloning it, augmenting it considerably in the process as a psychic resonant device. The monster was engineered and bred with nightmarish imageries from the creations of the abovementioned scholars (Paley's sounds, Shea'sdescriptions, Manish's images), which derived from its supposedly alien world.
[2] Both the disappearances and the theft of the brain are reported by the
New Frontiersman, correctly insisting that it is part of an elaborate conspiracy (but for the wrong reasons).
While on a plane returning from Nicaragua in 1985, the
Comedian spots the uncharted island and, suspecting
Sandinista bases,
[3] infiltrates it and discovers Veidt's conspiracy, the resulting "professional jealousy" of which deeply traumatizes him. After he returned to New York he drunk and crying, broke into the apartment of
Edgar Jacobi, formerly the supervillain Moloch, and rambled about what he saw before departing; Veidt, who had Moloch's house bugged,
[4] discovers that the Comedian had found out about his plan and subsequently murders him by throwing him out of his apartment window, thereby prompting investigation by
Rorschach and setting off the events of the graphic novel.
Afterward, all of the monster's creators are killed when the Pyramid Deliveries ship taking them home is blown up in order to erase all evidence of Veidt’s plan.
if you saw the movie, you don't need to have read the comic, aside from maybe the squid thing. 
score, tho
Hey, You Think I Can lift 200 pounds?
