. >> police chief greg surcalled an impromptu press conference where he issued a very urgent message.gotham city needs you, . this is police chief greg sir. only hoping you can hear my voice. bring the batkid. >> reporter: listen to miles. >> yes! >> call me right now. we have a damsel in distress. >> he knocks on the door. >> reporter: it was batman ready to pick up batkid. but remember miles had no idea. >> you'd better get dressed. >> it's funny because once he put on the costume it was like he just did this. >> reporter: there he was. their son transformed. >> who is this kid? you know, he's not ours because ours would be like -- >> reporter: descending the stairs, the batmobile waiting. >> i'm like, okay. leave you need the car seat because there's a lot of cops around. >> reporter: he may be batkid but mom still wants him in a car seat. pulling out batkid waves to crowds. the office workers at the windows. 25,000 gathering in the streets. and just look at miles waving back. the first image on twitter the message from make-a-wish. "here he comes." [ cheers and applause ] >> i thi