John Cook was an Aquaman foe. He stole a device which could devolve and evolve sea creatures. He had Aquaman and Aqualad face prehistoric forms of aquatic life, modern ones and versions from the future.
John Cook
Description
Character Details
Follow This Character
Add this character to one of your lists.
Edit Content
Sign in to edit and improve this content.
View History
Sign in to view the edit history for this content.
Share this page via your device's share menu, or copy the link to clipboard.
Report
Sign in to report this content if it violates community guidelines.
Your Comic Collection Awaits
Join thousands of comic enthusiasts tracking their collections,
discovering new series, and connecting with fellow fans.
Edit
Loading edit form...