Dr. Geoffrey Crawford was a professor at Desert State University who took undergraduate Bruce Banner under his wing to mentor him.

At this time, Crawford is paraplegic, but nevertheless able to create a machine that could filter out the gamma radiation from Banner's body.

The key element which makes Ravage such a dangerous enemy is that he still has Crawford's mind and lust for power.

Crawford turns Banner over to Thunderbolt Ross for fear of being stopped from becoming Ravage again.

[3] Ravage possesses immense strength, durability, and leaping, similar to the Hulk, while maintaining his intellect.