Rumpus McFowl

Rumpus McFowl is a fictional character of the Scrooge McDuck universe, created by William van Horn in 1994. He was introduced as a lazy half-brother of Scrooge McDuck, Matilda McDuck, Hortense McDuck and Gideon McDuck. He is considered an illegitimate son of their father Fergus McDuck and Vera O'Drake, either a cousin or a sister of Downy O'Drake who would later become Fergus' wife.