- Alternate Character Interpretation: The author has taken a rather creative interpretation on a minor canon character's backstory. N'tho 'Sraom is described as the youngest member of a special operations unit and having a healthy respect for humanity. His Alternate Universe counterpart demonstrates this via his status as a member of the Squidhead subculture, who admire human entertainment and pop culture. He has an almost gamer-like desire to dominate his opponents on the battlefield, making him reckless.
- Given that it's a hundred and thirty-one years after the events of Halo 3 in-story, and that when we see another of the Chief's Sangheli companions from that time he is quite ancient, and on top of that that N'Tho is quite young, it's possible that this is a descendant, or was named after the original bearer of the N'tho 'Sraom name. Or it could simply be a case of them having the same name, but otherwise having no relation- there are plenty of examples of that sort of thing happening, even on modern-day Earth.
- Angst? What Angst?: Though perfectly in-character for him to do so, The Chief, after realizing he's The last Spartan while at Spartan Hill, bounces back pretty quickly, asking Anderson what his next mission will be.
- Chapters 20 and 21 reveal that he's just been very good at ignoring it though.
- Author's Saving Throw: Quickly and willingly Humanity gave up Artificial Intelligence after the First Contact War. Initially it seemed like a complete cave-in, but a Codex Entry at the end of Chapter 24 paints it as a long-drawn out diplomatic/legal process that climaxed with an incident with a rogue AI infiltrating the Citadel itself.
- In addition, it's noted that AIs are still common among humans living outside of Citadel law and influence or working for ONI.
- One of the stated goals of humanity and the former covenant races is that if they get a council seat, they're going to bring back Slipspace and AI technology.
- On a meta level, the author has noticed that as the fic's popularity rises, he has gotten a wave of new reviews criticizing some of the content of the first chapters and plans to remedy this by removing a few Codex Entries containing already existing saving throws to said chapters to placate new readers long enough to keep them reading.
- To a smaller degree, he points out later on that though he classified Mgalekgolo as dextro-amino creatures initially, it was because he mistakenly assumed that "Dextro-Amino" meant "eats rocks." He later apologized for this and added in that though they do eat rocks, they won't swell up and die if they eat Turian or Quarian food.
- Badass Decay: The Arbiter's suffered this a little bit, but isn't completely inept. This is justified because he's almost two hundred years old, and is reaching an advanced age, even for Sangheli. That and Miranda knows how Elites think, which helps her. The author also states that Miranda's enhancements make her a rough match for a SPARTAN-III, so it's less of "This character isn't as awesome," it's "This character is now old, and is facing a very clever, very strong opponent who is much younger."
- Crazy Awesome: N'tho 'Sraom, and he'll be happy to remind you of that when he isn't actively proving it, Idiot Hero moments notwithstanding. He is, after all, from a species capable of fighting a SPARTAN on nearly equal footing and is a Spec Ops member.
- Creator's Pet: Miranda was accused of being this after her first appearance, but the author got rid of complaints with a logical (if not also debatable) reason, and noted that he didn't even like Miranda. Incidentally...
- Ron the Death Eater: A less extreme and egregious example than most, but Miranda's still suffering from Adaptational Villainy, going from a Lawful Neutral Good Is Not Nice Jerk with a Heart of Gold to a Lawful Evil Knight Templar and Smug Snake.
- Possibly justified in that this may be what canon Miranda was like prior to her Character Development in Mass Effect 2.
- Harsher in Hindsight: When Chief first sees Sovereign in orbit over Eletania, he wonders if its creators deliberately invoked the image of a deep-sea monster in its construction. We learn that he's somewhat right in the Leviathan DLC for Mass Effect 3... in a dark manner, though.
- Hilarious in Hindsight: Tali mentions, when she explains why she didn't get a Star Wars joke, that they didn't get many vids in the Migrant Fleet. This was written well before the Citadel DLC, where it's revealed that Tali was actually a fan of vids (specifically Fleet and Flotilla) back before her pilgramage.
- The commander of the Normandy fighting against creatures called Brutes? That would never happen... until Mass Effect 3.
- Moral Event Horizon: Saleon crosses it for the above reasons
- Take That, Scrappy!: Notably averted with Diana Allers, who the author personally has no strong feelings about one way or the other and thus felt no aversions to including.
- They Wasted a Perfectly Good Plot: Some fans quite enjoy the April Fools Day Alternate Universe, especially when they saw the second chapter. Unfortunately, the fact that it's only an April Fools joke means that seeing a fully realized version of it is unlikely.
- Though a second, similarly lengthy chapter was posted for that story the following year's April Fool's Day.
- What an Idiot!: N'tho in again, the Thresher Maw chapter and lampshaded no less.
- He does have the grace to admit when he's screwed up, or lampshade when he is doing something stupid. He openly states "This may be the single stupidest thing I've ever done" when he has the job of being bait for The Flood.
YMMV / The Last Spartan