Season 1: Claudia definitely has one of the most dramatic transformations of the cast. The 1953 Claudia (Gwendolyn Göbel) is the spoiled daughter of Egon and is seen tutoring young Helge and flirting with young Tronte. By 1986, Claudia (Julika Jenkins) has become the new manager of the nuclear plant and mom to Regina. The jaw-dropping, life-changing secrets she uncovers during her first year on the job result in her withdrawing from the world. In 2019, we meet the oldest version of Claudia (Lisa Kreuzer) that we'll see and find out that she's been living in isolation in a mysterious underground bunker that may or may not be in any of the show's three timelines.
Season 2: Like Jonas Kahnwald and Noah, Claudia slips easily and frequently between 1953, 1986, and 2019 in season 2. Turns out she hasn't been just hanging out in the bunker all this time, but actively trying to stop Adam and his war against time. And while at first it seems like Claudia is the good guy and Adam the bad one, things get more complicated when it's revealed that Claudia is the person whom 1953 Helge refers to as "The White Devil."
- Adam's World: Three months after the apocalypse, 1986 Claudia is living in the abandoned police station with adult Regina, who is dying. After Regina dies, Claudia meets herself from Eva's world, who tries to recruit her to Eva's side and turn her against Jonas. Claudia meets a younger Jonas (and later young Noah) and delays him from learning how to travel for over 30 years before setting him on his season one course. Within those years she stops trusting her alternate self, ends up killing her, and goes off to figure out how to really break the cycles within both Adam and Eva's worlds. She eventually finds Adam in the future, and tells him she knows how to prevent the loops once and for all.
- Eva's World: In Eva's world, Claudia from the '80s does Eva's bidding, guiding her alternate self for over 20 years to try to create a loop in which Regina lives, until she's killed by that version of herself.
- Origin World: We see a quick glance at a photo of 1986 Claudia in adult Regina's home, which shows Claudia, Regina, and presumably, Regina's real father.