Follow @nbcbayarea !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");



The 12,000 volunteers who donned superhero capes and morphed San Francisco into Gotham City can’t make sure a California boy will stay clear of leukemia for the rest of his life.

But, in handing the 5-year-old the key to the city on Friday, they sure gave him every boy’s dream-come-true for a few hours and a memory for a lifetime.

PHOTOS: Batkid Saves the City



After the Batphone rang at the Grand Hyatt hotel, Miles – a shy kindergartner with bright blue eyes who is in remission from his cancer – became “Batkid,” complete with mask, cape and puffy fake muscles. Wearing Velcro sneakers, Miles exited his Lamborghini-turned-Batmobile, but only after unstrapping himself from his car seat. (Safety first, Robin.)

"He's just the cutest," said Jackie Johnston, one of the hundreds of fans who had come out to watch.

But Miles isn't just cute. He's a cancer survivor. And in the eyes of the world, he's a hero.

RAW VIDEO: Batkid Jumps Into Action to Save Damsel in Distress

RAW VIDEO: Batkid Nabs the Riddler

RAW VIDEO: Batkid Receives Key to San Francisco

He jumped on a trampoline to give him a little extra boost and untied a "damsel in distress," sitting on the cable car tracks on Hyde Street, a plastic box of what looked like explosives strapped to her back. Of course, the 5-year-old didn't know exactly what to do at first, but was aided by his partner in good deeds, Batman – one of the many volunteer actors participating in the event.

DOWNLOAD: Get the NBC Bay Area App!

The crowds went wild, cheering, clapping and ringing bells.

Batkid's efforts even captured the attention of President Barack Obama.

"He's great, he did such a great job," said Mario Martinez, who came to watch, holding his own son in his arms.

After that caper, Batkid went on to apprehend the Riddler, chase the Penguin, and stop at Burger Bar in Union Square to fuel up. And then, like every good superhero does - he was poised to accept the key to the city from the mayor, in this case, Ed Lee.

MORE: Penguin, Riddler Charged With Kidnap, Conspiracy

Miles, whose parents asked that his last name not be revealed, has been a bit shy about talking through all this – a dream-turned-reality thanks to the Make-A-Wish Foundation in the Bay Area. In some brief interviews before his big day – which had been a surprise – Miles simply said his wish was to be Batman, a character he regularly slips into during his rough-and-tumble escapades in his hometown of Tulelake, Siskyou County, near the Oregon border.

But his mom, Natalie, said this dream is emblematic of her son’s battle with leukemia.



“He likes to be a superhero,” she said. “He is one. He beat an awful disease.”

MORE: World Responds to Giving "Batkid" His Dream

All this is happening because of what happened after Patricia Wilson of the Make-A-Wish Greater Bay Area Foundation sent an email in October asking for some volunteers to help give Miles his wish. She's part of a national organization that grants children with life-threatening illnesses their wishes. Her chapter opened in 1984 and now grants about 300 wishes a year.

But this wish request was different. Wilson's email request to turn San Francisco into Gotham City went viral. And between 11,000 and 12,000 volunteers came to contribute their efforts, whether it was acting, being stage crew or assisting in a myriad of other ways.

"Obviously, we’ll never replicate this," Wilson said. "This is a moment in time when something goes viral and the city goes alive."

To learn more about the Make-A-Wish Foundation call 415-982-9474 or visit www.SF.Wish.org.

NBC Bay Area's Jean Elle and Bob Redell contributed to this report.

MORE: Thousands Helping Transform SF Into Gotham City to Make Boy's Wish Come True

var nbcLP={};nbcLP.aRandomNumber=Math.floor(Math.random()*10000);nbcLP.currentPageLoc=encodeURIComponent(window.location.href);nbcLP.currentSiteLoc=encodeURIComponent(window.location.host);nbcLP.defaultWidth=652;nbcLP.defaultHeight=367;nbcLP.cmsID="232125151";nbcLP.vidPid="6aYIPWtPZ9Hg";nbcLP.vidSec="TK";nbcLP.vidSubSec="TK";nbcLP.vidFrame=document.getElementById("nbcLP232125151");nbcLP.vidFrame.style.border="none";nbcLP.vidFrame.width=nbcLP.defaultWidth;nbcLP.vidFrame.height=nbcLP.defaultHeight;nbcLP.vidFrame.scrolling="no";nbcLP.vidFrame.src="http://www.nbcbayarea.com/templates/nbc_partner_player?cmsID="+nbcLP.cmsID+"&videoID="+nbcLP.vidPid+"&width="+nbcLP.defaultWidth+"&height="+nbcLP.defaultHeight+"&sec="+nbcLP.vidSec+"&subsec="+nbcLP.vidSubSec+"&turl="+nbcLP.currentSiteLoc+"&ourl="+nbcLP.currentPageLoc+"&rand="+nbcLP.aRandomNumber;

var nbcLP={};nbcLP.aRandomNumber=Math.floor(Math.random()*10000);nbcLP.currentPageLoc=encodeURIComponent(window.location.href);nbcLP.currentSiteLoc=encodeURIComponent(window.location.host);nbcLP.defaultWidth=652;nbcLP.defaultHeight=367;nbcLP.cmsID="232126171";nbcLP.vidPid="OPmMgQv174_A";nbcLP.vidSec="TK";nbcLP.vidSubSec="TK";nbcLP.vidFrame=document.getElementById("nbcLP232126171");nbcLP.vidFrame.style.border="none";nbcLP.vidFrame.width=nbcLP.defaultWidth;nbcLP.vidFrame.height=nbcLP.defaultHeight;nbcLP.vidFrame.scrolling="no";nbcLP.vidFrame.src="http://www.nbcbayarea.com/templates/nbc_partner_player?cmsID="+nbcLP.cmsID+"&videoID="+nbcLP.vidPid+"&width="+nbcLP.defaultWidth+"&height="+nbcLP.defaultHeight+"&sec="+nbcLP.vidSec+"&subsec="+nbcLP.vidSubSec+"&turl="+nbcLP.currentSiteLoc+"&ourl="+nbcLP.currentPageLoc+"&rand="+nbcLP.aRandomNumber;

var nbcLP={};nbcLP.aRandomNumber=Math.floor(Math.random()*10000);nbcLP.currentPageLoc=encodeURIComponent(window.location.href);nbcLP.currentSiteLoc=encodeURIComponent(window.location.host);nbcLP.defaultWidth=652;nbcLP.defaultHeight=367;nbcLP.cmsID="232090671";nbcLP.vidPid="bHN0ET62mYHq";nbcLP.vidSec="TK";nbcLP.vidSubSec="TK";nbcLP.vidFrame=document.getElementById("nbcLP232090671");nbcLP.vidFrame.style.border="none";nbcLP.vidFrame.width=nbcLP.defaultWidth;nbcLP.vidFrame.height=nbcLP.defaultHeight;nbcLP.vidFrame.scrolling="no";nbcLP.vidFrame.src="http://www.nbcbayarea.com/templates/nbc_partner_player?cmsID="+nbcLP.cmsID+"&videoID="+nbcLP.vidPid+"&width="+nbcLP.defaultWidth+"&height="+nbcLP.defaultHeight+"&sec="+nbcLP.vidSec+"&subsec="+nbcLP.vidSubSec+"&turl="+nbcLP.currentSiteLoc+"&ourl="+nbcLP.currentPageLoc+"&rand="+nbcLP.aRandomNumber;