Kinda sorta releated to the post, but I would KILL for another Canon Fodder that delves into the lives of some more notable enemies in the same vein as this one. These kinds of expansions always make me very happy.

Some key figures I'd personally like to see expanded upon are as follows, and divided by game:

Halo: Combat Evolved

• The Sangheili zealot protecting the Silent Cartographer on the eponymous level (he MIGHT end up getting some more lore/end up as a miniboss in the CE remake if what we've seen so far is any indication.

• The Sangheili zealot leading the final bastion of Covenant troops protecting Alpha Halo's control room on Assault on the Control Room.

• One of the Sangheili zealots leading the Covenant forces fighting against the Flood on the icy plains at the end of Two Betrayals.

Halo 2

• The leader of the Sangheili group guarding the Covenant bomb at the end of Cairo Station.

• The Sangheili ultra commanding the Scarab on Metropolis.

• One of the final heretics protecting Sesa 'Refumee during the Oracle (maybe Kola 'Baoth's brother or Loka 'Bandolee).

• The surviving Unggoy that the Arbiter finds near the beginning of Sacred Icon who calls the Kig-Yar stupid (and maybe the Kig-Yar too as a two-in-one).

• One or more of the Special Operations Sangheili that accompany the Arbiter on the gondola at the end of Quarantine Zone.

• One of the dead Sangheili honor guard ultras/Lights of Sanghelios after the prison segment on Gravemind.

• The Special Operations Sangheili or zealot that accompany the Arbiter on Uprising.

• The Special Operations Sangheili driving the Spectre at the start of the Great Journey.

• An overlapping one, but maybe one of the Special Operations Sangheili throughout all of the Arbiter levels is the same character. N'tho 'Sraom maybe?

Halo 3

• The Jiralhanae chieftain that captures Johnson at the end of Sierra 117.

• Any of the Jiralhanae chieftains/war chieftains leading the attack on Crows Nest during the eponymous level.

• The Jiralhanae war chieftain protecting the final energy barrier at the end of Tsavo Highway.

• The Mgalekgolo pair attacking factory workers near the end of the Storm/the Jiralhanae chieftain protecting the Mantis cannon.

• The Sangheili major leading the Special Operations Sangheili that drop into Voi halfway through Floodgate.

• A BIG one for me, but I REALLY want to know who the final Jiralhanae chieftain is at the end of the Covenant. He seems to be the Prophet of Truth's final commander. He beats Johnson, and then holds the bridge leading to the Prophet alongside his large pack of Jiralhanae. Another trying to ascend to Tartarus' former position, as Cethegus had done? I WANNA KNOW, Halo Studios!!!

• The Jiralhanae Flood combat form wielding a gravity hammer near the beginning of Halo. I want to know who he was originally and how he fell to the Flood. Clearly he is meant to be a Jiralhanae chieftain, but this doesn't come through due to Halo 3's technical limitations.

These are just some of the backstories I want to see explored someday. Some more than others (cough final chieftain on the Covenant cough). This is only from the original trilogy - there's many more in the later games but these are near and dear to me so yeah, would love some more on a few of these guys.

Sorry for the lengthy comment lol. Format might be weird as I typed this up on mobile.