|Occupation||Professional Musician (Singer)|
|First Appeared||Season 2, Episode 1|
In Season 2, we are introduced to Kai Booker. Kai is a troubled man who is from the future working on a regret: Travis, his best friend who commited suicide. Instead of fixing the regret, he stays in the past and becomes a barista at Goblins, a local coffee shop.
Kai doesn't like his therapy, especially his therapist, Dr. Fred. Throughout Season 2, he develops feelings for Erica. At the end of the Season 2 he discovers to let go of Travis and return to 2019.
In Season 3, Kai returns to give Erica a glimpse of her on mortality. He later returns to 2010 on a regret and ends up sleeping with Erica .