Droog is a Marvel Comics villain, and an enemy of the Hulk.
Droog started off as a dog, but he was bio-engineered into monstrous form. He was raised from a pup by the young Russian mutant genius known as the Gremlin. As the peerless Gremlin designed weapons for the Russian government, Droog (which is Russian for dog) was his only companion. Droog also enforced the diminutive Gremlin’s will.