班底

Traditional form:

班底

Pinyin (reading):

bāndǐ

Definitions:

• (theater) (originally) non-leading actors; supporting cast; (now) key members of a production team (actors, directors, writers etc)
• (by extension) key members of a group or organization

Characters:

• 班 - class, squad, team, work shift
• 底 - bottom, underside; below, underneath

Traditional characters:

• 班 - class, squad, team, work shift
• 底 - bottom, underside; below, underneath