Create a vibrant scene set in a bustling city park where a group of diverse friends excitedly discusses Roblox. As they talk, a glowing portal forms around them, and they begin to transform into Roblox characters. Show the gradual change from realistic skin textures to blocky, colorful features, accompanied by playful, whimsical music and magical sound effects. Capture their joyful expressions during the transformation and reveal them as fully realized Roblox characters striking fun poses. Use dynamic camera angles to enhance the excitement of the scene.