The character Lexa doesn’t exist in the books and was created for the TV show. The actress who plays Lexa, Alycia Debnam-Carey, didn’t even have to audition for the part – it was offered to her! Debnam-Carey was also being considered for the role of Alicia Clarke onFear the Walking Dead, which she also landed.
Lindsey Morgan played the character of Raven. She was just meant to be a guest star during the first season ofThe 100. She was supposed to be killed off at the end of season one but was instead upgraded to a series regular for season two.
In the original script, Raven was going to be Finn’s mother, but it was decided that she would be more like Glass from the book. Instead of a mother-daughter relationship, their characters were childhood friends who develop a complicated romantic relationship.
Eliza Taylor told Starburst magazine that she never actually had to audition for the role of Clarke Griffin. “I didn’t actually audition,” she said. “I’d been living in LA for about a month and my credit card was stolen and all my money was taken spent at Home Depot, which was great. I got a call from my manager to say that an audition I’d done months ago for a film had been looked at by the producers of this TV show called The 100”
She read the script and loved it so the next day she went for the meeting and got the role
While many series based on books don’t begin filming for quite some time after the book’s release, this isn’t the case withThe 100. In fact, the filming of the series started before the book was even released by Kass Morgan.