The Legion is correct about the pronunciation of the word "Caesar" with a hard C as it would have been in ancient Roman Latin. This is also the origin of the word "Kaiser" in German as it was directly borrowed from Roman Latin. Pronouncing Caesar with a soft C was a product of the later Catholic Church's influence on the Latin language.
When Legate Lacerta (Macaulay Culkin) meets Lucy he greets her by saying "Ave, profligate". "Ave" is Latin for "hail" which basically means "be well", and is a commonly used greeting/farewell in the Legion. "Profligate" is a derogatory term used by Caesar's Legion for outsiders, enemies (like the NCR), or anyone seen as immoral, dissolute, and wasteful, contrasting with their rigid, disciplined society.
During Elder Cleric Quintus' speech, he mentions Roger Maxson as an inspiration behind his motivation for rebellion. Roger Maxson is a character that was first mentioned in Fallout (1997) and was credited as being the founder of the Brotherhood of Steel.
The weapon that Xander wields before fighting the Securitron is a Super Sledge, a melee weapon that has appeared throughout the Fallout games in different versions, though this version is identical to the ones seen in Fallout 4 (2015) and Fallout 76 (2018).
Thaddeus has a bunch of kids taking the bottle caps off bottles of Sunset Sarsaparilla, as these are used as currency in the Mojave Wasteland in addition to Nuka-Cola bottle caps. Sunset Sarsaparilla was first introduced in Fallout: New Vegas (2010) as a consumable item and soft drink that was produced by the Sunset Sarsaparilla Company before the Great War. Popular in the western United States, Sunset Sarsaparilla is a root-beer-type carbonated beverage often dispensed from vending machines, and was in direct competition with Nuka-Cola in the soft drink market. Shortly before the Great War the Sunset Sarsaparilla Company began a special promotion called the Star Hunt where a limited number of bottles would have a blue star printed on the bottom of the bottle cap, which kids could mail in for a free Sunset Sarsaparilla deputy badge like the one worn by Festus, the company mascot. This promotion had grown to become a legend in the Mojave Wasteland with the star bottle caps being extremely valuable, as legend said that collecting 50 of them resulted in finding an extremely valuable treasure of bottle caps. When the player eventually collects 50 star bottle caps, they can be turned into a robot replica of Festus at the Sunset Sarsaparilla headquarters starting a quest that ends with the opening of the Sunset HQ vault, which is filled with approximately 1,500 bottle caps and also 319 Sunset Sarsaparilla deputy badges, the "real" prize of the Star Hunt, which are weightless and monetarily worthless in the game. Also inside the vault is another Wastelander who had also been searching for the Sunset treasure, but somehow got locked inside the vault and died, on his body the player can find a unique laser pistol called Pew Pew.
Game director Josh Sawyer said in an interview the Sunset Stars and the quest to find them was based on the urban legend surrounding Tootsie Roll Pop wrappers, as it used to be a commonly believed myth that a sucker wrapper featuring an Indian pointing a bow and arrow at a star could be redeemed at the place of purchase for a free sucker. For a time a number of stores believed this was a real promotion too, they would give out free Tootsie Pop suckers to people that turned in such a wrapper, and would mail in the wrappers expecting the company to reimburse them. However the Tootsie Roll company never had such a promotion or offer, it got to the point where they had to release a public statement about the misconception, and the origin of the urban legend remains unknown.
Game director Josh Sawyer said in an interview the Sunset Stars and the quest to find them was based on the urban legend surrounding Tootsie Roll Pop wrappers, as it used to be a commonly believed myth that a sucker wrapper featuring an Indian pointing a bow and arrow at a star could be redeemed at the place of purchase for a free sucker. For a time a number of stores believed this was a real promotion too, they would give out free Tootsie Pop suckers to people that turned in such a wrapper, and would mail in the wrappers expecting the company to reimburse them. However the Tootsie Roll company never had such a promotion or offer, it got to the point where they had to release a public statement about the misconception, and the origin of the urban legend remains unknown.
