Marvel may have had their next comic book character handed to them:

The discovery of radioactive snails at a site in southeastern Spain where three U.S. hydrogen bombs fell by accident 40 years ago may trigger a new joint U.S.-Spanish clean-up operation, officials said on Wednesday.

The hydrogen bombs fell near the fishing village of Palomares in 1966 after a mid-air collision between a bomber and a refuelling craft, in which seven of 11 crewmen died.
...
Spanish authorities say the appearance of higher than normal levels of radiation in snails and other creatures shows there may be dangerous levels of plutonium and uranium below ground, and a further clean up could be necessary.

He could fight crime by putting a slime trail in front of the robbers while they try to run away, and use how super hard radioactive shell for protection against bullets.  Of course he'll need a side kick to help him in his adventures... I'm thinking maybe Sluggo the Wonder Boy.