Define Person 8 Meaning

Person 1: Hi
Person 2: Where's Person 8?
Person 3: I don't know.
Person 4: The 8th is somewhere
Person 5: I don't know where is he.
Person 6: Where is he?
Person 1-5,7: I don't know.
Person 8: I'm right here.
Person 1-7: There he is.