New Kensington’s primary drag was bustling Saturday night with little ones in costumes — from zombies and vampires, to fairies and butterflies, to motion picture villains and superheroes. They descended on the New Kensington Arts Center on Fifth Avenue for a children-focused spate of Halloween-themed actions. Clad in a Spider-Guy muscle accommodate and “Transformers” mask, 5-calendar year-outdated Milo Smittle centered intensely on his footwork as he busted moves to “The Gummy Bear Track.” He drew a dancing lover in 9-calendar year-old Talaya Jackson, who sported black get the job done boots and a Freddy Kruger-fashion striped sweater. Sequita Smith laughed in delight as her grandson, 4-yr-old Sequorri, searched for the…