Sadie Endesha

"You can't just give up — throw away your life!"

- Sadie to Jonas, after realizing he isn't trying to get out of the city.

Sadie Endesha was a civilian and a resident of New Mombasa. She later becomes the handler for the Huragok Quick to Adjust, carrying the Vergil subroutine designed by Sadie's father to protect her.

Biography
Sadie was born around the year 2533. Her mother, who was a passionate public defender, was killed by one of her clients when Sadie was still young. This prompted her father, Dr. Daniel Endesha, to write a sub-program called "Vergil" into New Mombasa's urban infrastructure AI, the Superintendent, to watch over and protect her. She was clearly irritated by Vergil's "over-protective urges," but she also adored him; she was reduced to tears when she was forced to leave Vergil behind to evacuate New Mombasa, telling Vergil that he was all she had left of her recently deceased father.

She and Mike Branley traversed the war-torn New Mombasa during the Covenant invasion of Earth. They managed to escape alive with the help of Vergil. During this trip, she and Mike grew closer together, which hints that a relationship may have formed between them after they escaped the city. She was also relentlessly hunted by corrupt police commissioner Kinsler who murdered her father before Sadie, with the help of Mike and Vergil, left him to be torn apart by an angry crowd. Though she wanted to go back for Vergil, the AI and Mike convinced her to flee on Kinsler's private train with a bunch of other refugees.

After the war and upon discovering that Vergil was now infused into the Huragok Quick to Adjust, ONI decided to let her become Vergil's handler as Vergil retained his fondness for Sadie even as part of the Huragok. At some point in 2555, she was captured by United Rebel Front forces from Talitsa to lure Vergil into enemy hands before they were rescued by the remnants of Alpha-Nine.

Following the start of the Created conflict and the Subjugation of Earth, Sadie and Vergil are rescued from a secret ONI base on Luna, now under Created control, by elements of Alpha-Nine as part of a secret ONI mission regarding the United Rebel Front. Sadie and Vergil join Alpha-Nine in their mission with Sadie's knowledge of AIs, both from working with Vergil and from what she learned from her father, proving useful against Leonidas. Though Sadie proves to be unsure of herself, Vergil helps to reassure Sadie. After the mission, Sadie and Vergil join the rest of Alpha-Nine aboard the.

Personality and traits
Sadie is a dedicated citizen, attempting to enlist in the UNSC defense force despite the high fatality rate. She is shown to be caring, mourning Tom Uberti even though he gave her and Mike away, nearly resulting in her death.

Trivia

 * She is the main character of a meta-game titled Sadie's Story in Halo 3: ODST. Through her point of view, players would be able to see what New Mombasa was like before and during the Covenant attack, and before the arrival of the ODSTs. She later returns in Halo: New Blood and Halo: Bad Blood.
 * Sadie was originally named Maddie. Her name was changed after the message "Maddie, where are you?" in the "Prepare to Drop" trailer caused complaints, as it was unintentionally echoing the disappearance of British child Madeleine McCann.
 * She is voiced by Masasa Moyo.

List of appearances

 * Halo 3: ODST
 * Sadie's Story
 * Halo: New Blood
 * Halo 5: Guardians
 * Limited Edition
 * Halo Mythos
 * Halo: Bad Blood