and protective of him (possibly being friends). Walternate, making arrangements through Newton and other shapeshifters, successfully traveled to the prime universe, and was later brought to see Peter for the first time since he was taken by his counterpart. Walternate convinces Peter to return home to the Other Universe, though he later goes back, though not before Walternate appears to have Olivia replaced by her own counterpart, as part of an unknown plan regarding Peter. Alternate timelime: Original Walter appears more nervous and insecure, and doesn't leave his lab for years on end. He is still under supervision of psychiatrist Bruce Sumner, the director of St. Claire's Hospital, where he had been institutionalized. He was released from hospital under Olivia's care. Secondary characters Astrid Farnsworth Astrid Farnsworth (portrayed by Jasika Nicole; main: season 1–5) is an FBI Junior Agent who serves as Olivia's assistant. She is stationed in the lab with Walter, who can never remember her name (e.g. calling her "Asterix", "Aspirin", "Asteroid", "Astro", "Ostrich", "Aphid", "Esther", "Ashram", "Alex", "Afro", "Astrif", "Agnes", "Asner", etc.). In the 4th episode of season 4, "Subject 9", Walter calls out to Astrid by uttering "Claire!". Astrid, who normally brushes off these idiosyncrasies, however, this time she asked Walter: "Really?!? Claire?!? That doesn't even start with an "A"!" Though her work is mostly clerical, she has a number of skills which come in handy during their cases, such as cryptanalysis and proficiency in Latin. Despite being a main character for four years, Astrid's personal life and past were never examined in depth. The parallel universe version of Astrid Farnsworth is an autistic savant serving as a computer and statistics specialist in the Fringe division. Alternate timeline: The original Astrid is a field agent, examining crime scenes and collecting information with the rest of the team, which she relays back to Walter in real time via a videophone device worn on her right ear. She also continues to support Walter in the lab. In the episode "Making Angels", the two Astrids finally meet, when alternate universe Astrid gives herself security clearance to cross over after the death of her father, to seek condolences and closure from her primary universe counterpart. It is in this same episode that we are offered a peek into the home lives of the two Astrids and why they might be so different. We learn that while both Astrids' mothers died