"Lucy, the naive vault dweller in Fallout, is a difficult character to play. I think she lived up to the broad role description of 'Ned Flanders, but with a violent edge' very well."

In an Amazon Q&A, Parnell said she was familiar with the "Fallout" games from friends and siblings who had played them, and when the show's executive producer described Lucy, she was immediately on board. She said, "I'm in; I'm 100 percent in. Please sign me up," he remembers telling her.

Fallout's producer described Lucy as "the kind of person who would be in a toothpaste commercial but could also kill people" and "a Leslie Knope/Ned Flanders type, but there's something dangerous lurking."

"I felt like, 'Okay, I can do this, I can do this. ' Sometimes I feel it in my body. But it was still a real surprise to get cast. I couldn't believe how lucky I was." [Her "okie dokies" are just missing the "-ilys," but they have more of an "I'm about to do something terrible" edge than Ned's. Lucy's naivete is chipped away from the sense of justice and cheerful good will she developed in the Vault by her aptitude for violence and her willingness to use it. It works.

The other main characters do the same, experiencing a conflict between their naive model of the world and the world itself. Maximus, the steel-bound soldier, is in some ways the archetypal underdog, but he breaks the mold with his selfish and sadistic behavior, making one question how committed he really is to the chivalric way of life he aspires to.

"Maximus is someone that many people would relate to if they could. 'He struggles with ideals in his head. He's driven by a genuine force of wanting to help people, but he's in between. He wants to do something admirable, but he knows that he has to take action by any means necessary to achieve status and glory, especially in a world like Wasteland, where you're often on the brink of kill or be killed.

Walton Goggins, an audience favorite as the back-and-forth duo of Cooper Howard and The Ghouls, plays the most typical arc of the three. According to Goggins, The Ghoul is the toughest son of a gun he has ever played.

"I've played a lot of badasses in my career, but none as badass as Ghoul. He's a pretty intimidating guy, but I'd never played someone like Cooper Howard, so I saw a lot of Gary Cooper, a lot of John Wayne, a lot of Gunsmoke, a lot of interviews."

"When you look at the videos from that time, the people on the screen were well-spoken and sociable, but also reserved, a little conservative, not only in their politics, but also just in the way they expressed themselves, and they were magnificent. And I thought, 'Well, that's Cooper. He's part of a great generation.'

On another character development, fans tried to find out what level Lucy would have reached by the end of the show if she were a player in the "Fallout" game. Given what they found, she may want to complete a side quest before returning to the main quest in the presumed second season.