Camaleão Cinzento

Origin
While working on the Tietê river dredging, environmental engineer, Mario Vianna, had an accident due to a severe storm that had begun on the site and fell into the fetid and polluted waters. He was then taken by the current and disappeared.

Days later, he woke up in a gallery of the sewers and found that was saved by someone who called himself Master Grasshopper. He also realized that he could no longer see. The Master then explained that he had suffered mutations after coming into contact with toxins polluting the Tietê River, giving him a power to change color like chameleons but, unfortunately also left him blind.

When improved, Mario did not know what to do because he had no clue how to go home, and probably everyone he knew would think he was dead. He then, with no alternative, went to live with Master Grasshopper in the sewers.

The Master taught him how to use his chameleonic powers, which Mario was not of great value, since as he was blind, could not get out of the gray tones. He then went on to learn the secret ninja art and when his training was complete, Mario had not only become a great fighter, but also spent the better environment and feel the space around him and can act and move freely as if he had not been impaired.

Mario then with your new skill, and the identity of Chameleon Gray acted as vigilante fighting crime.