Great Nana

Wanetta "Great Nana" Thrombey, played by K Callan, is Harlan Thrombey's mother.

Personality
Not much is known about Nana as most of her role in the film is played as the quiet but sneaky observer. She can come across as rather merciless and irreverent to most of the family as she seemed to have no problem spilling the beans to Blanc. Despite her irreverence, she seems to be an overall decent person who raised Harlan to become the well-intentioned and good-hearted man he became. She also seems to be more caring and helpful to the nicer people in the film, including Blanc and Marta. It's likely Nana is the only Thrombey that Marta cares for once she receives Harlan's inheritance (perhaps along with Meg).

Family

 * Harlan Thrombey (son; deceased)
 * Linda Drysdale (née Thrombey) (granddaughter)
 * Neil Thrombey (grandson; deceased)
 * Walt Thrombey (grandson)
 * Richard Drysdale (grandson-in-law)
 * Joni Thrombey (granddaughter-in-law)
 * Donna Thrombey (granddaughter-in-law)
 * Ransom Drysdale (great-grandson)
 * Meg Thrombey (great-granddaughter)
 * Jacob Thrombey (great-grandson)