Below is a list of some great interviews with the main talent behind 12 Monkeys.
For a more structured list check out the searchable index of online articles in 12 Monkeys in the Press
Aaron Stanford
http://www.tvgoodness.com/2015/03/19/aaron-stanford-talks-12-monkeys-exclusive/
https://filmreviewonline.com/2016/04/15/12-monkeys-aaron-stanford/
http://collider.com/12-monkeys-aaron-stanford-interview/
Amanda Schull
http://thenerdybird.com/12-monkeys-amanda-schull-interview-part-1/
http://thenerdybird.com/12-monkeys-amanda-schull-interview-part-2/
https://www.tvfanatic.com/2016/06/12-monkeys-interview-amanda-schull-needs-you-to-know-cassie-is-n/
https://www.threeifbyspace.net/2018/06/talking-with-12-monkeys-amanda-schull-exclusive-interview/
Emily Hampshire
https://nerdist.com/12-monkeys-jennifer-goines-emily-hampshire-interview/
http://www.thetvjunkies.com/12-monkeys-emily-hampshire-season-2-preview/
https://uproxx.com/tv/12-monkeys-final-season-emily-hampshire-interview/
https://www.threeifbyspace.net/2018/06/talking-emily-hampshire-part1b
https://www.threeifbyspace.net/2018/06/talking-emily-hampshire-part2/
Other Cast
https://etcanada.com/news/22235/interview-how-the-cast-of-12-monkeys-avoided-doing-brad-pitt/
https://www.assignmentx.com/2015/kirk-acevedo-on-12-monkeys-exclusive-interview/
https://www.vox.com/2016/4/19/11456118/syfy-12-monkeys-season-2
http://www.ew.com/article/2016/03/07/12-monkeys-downton-abbey-brendan-coyle-photo/
Showrunners & Writers:
https://sofetchdaily.com/2015/01/06/12-monkeys-travis-fickett-interview/
https://www.gizmodo.com/what-the-12-monkeys-showrunner-learned-from-writing-for-1679744051?IR=T
https://www.hollywoodreporter.com/live-feed/12-monkeys-finale-season-2-787788
https://io9.gizmodo.com/what-the-12-monkeys-showrunner-learned-from-writing-for-1679744051?IR=T
www.denofgeek.com/us/tv/12-monkeys/265068/8-secrets-about-12-monkeys-season-3-every-fan-should-know
http://ew.com/tv/2017/05/18/12-monkeys-season-3-spoilers/
https://tvline.com/2018/06/14/12-monkeys-spoilers-final-season-4-cassie-cole-the-witness-video/
https://www.tvfanatic.com/2018/06/12-monkeys-season-4-terry-matalas-says-its-like-three-movies-and/
https://www.inverse.com/amp/article/46322-12-monkeys-season-4-hartle-hawking-state-explained