Born in 2538 on Kholo, Bless was too young to remember her home before the 2539Covenant attack. She never knew her parents and was raised in an Inner Colony foster care facility before joining the SPARTAN-III Program. She graduated from the program in mid-2552 and participated in limited action on Mars, post-Battle of Mare Erythraeum. Subsequent injuries and casualties saw Team Glaive dissolved and separated, Bless was equipped with transitional SPARTAN-IV augmentation suites as part of her recovery.
Determined as less-vindictive towards aliens than other SPARTAN-IIIs, Bless was reassigned to the Colonial Security facility in Rio de Janeiro, Earth, to assist the action teams responsible in monitoring the alien and Outer Colonial refugees concentrated in the city.