Eko's passport was a false Australian passport given by Caldwell to Eko, and labeled with the alias "Oduduwa Ulu". ("?") Since it was a fake passport, this was probably a false name.
- The name on the passport was "Oduduwa Ulu".
- The passport number was 223652.
- The birth date was listed as August 23, 1968.
- Place of birth was listed as Sydney, Australia.
- The date of issue was listed as April 16, 2004.
- The expiration date was listed as April 15, 2014.