Weapon XI (Earth-1600)

Weapon XI (also called the Weapon XI Program) was a super-soldier program stationed in the Savage Land which focused on experimenting on the island's fauna to create powerful living weapons.

History
Weapon XI was part of the broader Weapon Plus program (an initiative designed to produce super-soldiers). Weapon XI operated in the Pangaea facility in the Savage Land. Like Weapon X, Weapon XI's mechanism was genetic engineering; in this case, the scientists of Weapon IX experimented on the island's exotic wildlife, creating new mutations that could give their test subjects new abilities. The successive projects had Roman numerals, so Weapon XI was the eleventh such project.

Devil Dinosaur
One of the project's experiments was an enhanced tyrannosaurus named D3V1-1; genetically engineered while still an embryo, the baby grew to develop specially enhanced abilities (super strength, speed durability, intelligence, etc.). He developed hard, red, scaly skin and was larger than that of a normal tyrannosaur.

Rex
Another test subject, a deinonychus, went through similar process as D3VI1. Named R3X-1, the subject was injected in the brain with a replicated Oz serum, enhancing his intelligence at a great level.