Place it at the moment a new character appears, after Ceeday Huh and before Oh My God Wow, so the edit builds from a puzzled look to a direct question and then a bigger response.
About this sound
This is a short spoken clip of about twelve seconds built around the repeated question 'Who are you?' followed by a playful hoo hoo vocal chant. It feels curious, suspicious and teasing, like catching someone somewhere they should not be and calling them out with a grin rather than anger.