Agent Astrid Farnsworth
One of the funniest conceits in Fringe is the excellent Mad Scientist Walter Bishop’s plethora of reinventions and variations of Agent Farnsworth’s name.
Some people think it’s because Walter cannot remember Astrid’s name. I, however, suspect that this little quirk is a voluntary affectation through which the inimitable Walter Bishop expresses his profound affection for his infinitely patient, kind and compassionate sidekick/caretaker/friend and mother hen.
So among Walter’s onomastic gems for his beloved Watson we find:
Asterisk - in conversation (The Cure)
Astro - in conversation (In Which We Meet Mr. Jones), during an urgent request (Inner Child), during lab work (White Tulip), on an access roster (Do Shapeshifters Dream Of Electric Sheep?), preparing to transfer Bell’s soul into a brain dead man(Lysergic Acid Diethylamide)
Asteroid - in conversation (In Which We Meet Mr. Jones)
Astringent - in the Lab Notes (The Dreamscape)
Astral - in conversation (Bad Dreams) as the first part of ‘astral…projection’ Walter appeared to be baiting her, suggesting that he knows about his failures, or that they are intentional.
Aspirin - in conversation (Midnight), rushing to leave for the market (The Box)
Asterix - in conversation and quickly corrected (A New Day In The Old Town). Knowingly, or not, the legendary Asterix is a diminutive, fearless, cunning warrior, always eager for new adventures… not unlike Agent Farnsworth
Astricks - during lab busy work (Of Human Action), during congratulations (Johari Window)
Ostrich - being summoned to confirm the color of blood (The Bishop Revival), while helping Walter up after a lightning strike(The Last Sam Weiss)
Esther Figglesworth - as part of the elaborate fable Walter imagines while entertaining Ella (Brown Betty)
Ashram - summoned by Walter to retrieve ingredients for a strawberry milkshake (The Firefly)
Claire - asked to tend to the cameras in the lab shortly after Walter learns he may be returning to Saint Claire‘s. (Subject 9).
Aphid - when summoned to bring Agent Lee more bacon to feed his transformation hungers. - (Nothing As It Seems).
Ascot - in his exuberance to see Peter and Olivia as a couple. - (The Consultant).
Athos - looking for a knife to dissect his lemon cake – pig brain cupcake. - (Brave New World, Part 1).
Alex - when he is explaining his plan to go to find Bell at the A-1 Imports. - (Brave New World, Part 1).
SOURCE: http://fringepedia.net/wiki/Astrid