More than 13 years have passed since we first took control of Halos Oribital Drop Shock Troopers (ODSTs) with the release of Halo 3: ODST. Being the first Halo where not the main character Master Chief stood in the spotlight but an unknown ODST-rookie.
With the release of the new Halo Encyclopedia on Amazon things are about to change.
Source: N4G PC Halo 3: ODST Protaganist "The Rookie" identified as Lance Corporal Jonathan Doherty