Britain's best fighter has set his sights on helping a brave child beat their own tough opponent - cancer .
Charles Bronson has thrown his weight behind a campaign to help little Bradley Lowery take on neuroblastoma after the five-year-old was diagnosed with the potentially-fatal disease for the SECOND time in his short life.
Bradley has battled neuroblastoma since January 2013.
The chilling disease affects 100 children a year in the UK and usually starts in the abdomen and then spreads.
Charlie, who now goes by the name of Charlie Salvador, told pals he was determined to do all he could to help the bubbly primary school pupil beat the vicious disease after reading about it in the newspapers
The 64-year-old, who has shown a determined desire to change his ways in prison in the past few years, immediately put pen to paper and drew Bradley a picture.
In the drawing, called "It's A Wonderful Word", a colourful snake is seen popping its head up from the grass with a small mouse on its head.
Dragonflies buzz around the snake, who has two large teeth and a forked tongue fizzing out of its mouth, and Bronson wrote the little fighter a special message.
The picture - dubbed a 'Salvador Special' - is signed by the artist and was then sent to his pals Daz Holdcroft and Rod Harrison who dispatched it to little Bradley.
Daz told Mirror Online: "Charlie was so touched by the story of Bradley he wanted him to know there are people fighting for him all over the world.
"If he can take any inspiration or comfort from the drawing, Charlie knows he will beat this terrible disease."
It is not the first time Charlie has used his talents to help those less well off than him.
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Over Christmas he raised hundreds of pounds through sales of his art to help the Salvation Army care for the homeless.
In recent years Charlie has forged a reputation as an artist and told pals he has rejected crime and is a changed man.
Supporters claim he has raised £250,000 for good causes over the years.
The prisoner has told friends of his desire to work his way back through the justice system and revealed he also one day hopes to be able to take at classes for other prisoners to help them cope with the isolation.
He has also written an open letter which was posted on the Roller coaster Facebook page to young people begging them not to follow in his footsteps.
In the lengthy letter Charlie says: "Put the brakes on, stop and think. The facts are simple, it’s a road to hell, don’t do it. You can’t ever get that time back. Its lost, forever gone, a waste of life."
The artist tells young people how crime DESTROYS not just the villain's life but also their innocent family's.
He added: "When you’re young you think it’s clever, it makes you feel tough, you’re with the boys doing your porridge.
"Big tough guys, but your mothers at home crying her eyes out. She has to save up every month to visit you in all weathers, she has to be searched and security checked to get in to see you.
"Your mother is just another statistic of you crime spree, she’s a victim too. Imagine her visiting you for 20yrs; 30yrs. imagine the stress, the worry, the pain.
"Her son’s throwing away his life. It hurts her. Then she dies broken hearted and you’re still in prison.
"You wasn’t there for her, you never was. You may be refused to attend her funeral.
"Then when it’s all over, who visits you then? Then if and when you get out, you go to visit the grave, what can you say?"
Bronson calls prison "cold, cruel and wicked", before branding repeat offenders "clowns".
He says: "LOOK AT ME .4 DECADES LOST. All for what???? If you follow in my footsteps, you’re following a madman.
"So think, it’s your life, your shout. It’s one hell of a gamble."