Gretchen Grebe is a female anthropomorphic grebe.
Gretchen Grebe is a female grebe, related to the Gearloose family, who married one of Grandma Duck's brothers — depending on accounts, either former prospector Casey Coot, or farmer Humperdink Coot. Together, they had at least two children, farmer Cuthbert Coot and Fanny Coot.
Behind the scenes
She was created in 1993 by Don Rosa for his version of the Duck Family Tree. The common theory (based on her physical appearance) that she was a relation of Gyro Gearloose's — thereby explaining what Gyro's oft-mentioned yet blurry relationship to the Duck family actually is — was canonized in 2019 in Donald Duck's Big Family.