When announced, the show received approximately 120 auditions via tumblr. There are only 13 cast members, making the ratio of auditions to parts 9:1.
"Friends of the ABC" is released on StreamVaudeville, which also releases FOTABC's sister show "The Veronica Exclusive". Coincidentally, three cast members (Kadi Brazil, Megan Lambie and Lyric Bowman) have been featured on both series.
After her audition was sent in, Shay Olivia Gray was almost immediately written into the script as Enjolras - with head writer and creator Susan Mesler-Evans writing frequent remarks about Enjolras' short height, as Gray is just short of 5'1".
Three cast members were cast after only one audition, needing no further callbacks: Megan Lambie (Grantaire), Shannon Gray (Enjolras) and Cherie Anne Hendrie (Musichetta).
Filming was a particularly difficulty, as the cast spanned over two continents and various timezones, therefore it would be impossible to get them online all at once. Therefore audio clips of each actor speaking their lines were edited together chronologically and sent through to each actor for use when filming each scenes. Essentially, each actor was only reacting to a voice, not the facial expressions of fellow cast members.