Marielle Scott as Kathryn Sanders | A Teacher | FX on Hulu
"Kathryn Sanders," portrayed by Marielle Scott, is a carefree and funny French teacher at Westerbrook High who quickly becomes Claire’s closest friend at work.
as Josh Smith
Josh Smith is another of Eric’s closest friends. Although a bit of a stoner who follows his own path, he is bright and will most likely make it into an Ivy League school.
Rya Ingrid Kihlstedt
as Sandy Walker
Sandy Walker is Eric’s hardworking middle-class mother who has been raising Eric and his brothers on her own. She is warm, sharp and loves her sons very much, and has a deep gratitude and appreciation for Eric who she relies on considerably to keep their home together.