sprites/child sprites

 
var game = new Phaser.Game(800, 600, Phaser.AUTO, 'phaser-example', { preload: preload, create: create, update: update, render: render });

var parent;
var child;

function preload() {

    game.load.image('mushroom', 'assets/sprites/mushroom2.png');
    game.load.spritesheet('mummy', 'assets/sprites/metalslug_mummy37x45.png', 37, 45, 18);

}

function create() {

    parent = game.add.sprite(100, 100, 'mushroom');

    parent.addChild(game.make.sprite(-50, -50, 'mummy'));
    parent.addChild(game.make.sprite(100, 0, 'mummy'));
    parent.addChild(game.make.sprite(200, 200, 'mummy'));

    //  This child will move faster because its position is updated as well as the parent
    child = parent.addChild(game.make.sprite(0, 100, 'mummy'));

}

function update() {

    parent.x += 0.1;
    child.x += 0.1;

}

function render() {

    game.debug.text(parent.width, 32, 32);
    game.debug.geom(parent.getBounds());

}