Alfred Jodocus Kwak is a duck who endured profound tragedy shortly after birth when a car killed his parents and siblings during a heavy rainstorm; he survived only because he wandered off chasing a frog. He was subsequently adopted and raised by Henk, a mole and close family friend. Alfred lived with Henk in his grandfather's house before moving into a giant clog-shaped house, sleeping in his old cradle.

Alfred possesses a strong moral compass, consistently displaying kindness, bravery, and deep concern for others. Despite his early loss, he maintains an optimistic outlook, embodied by his favorite song about being happy today. His core values champion human rights, good manners, environmental protection, friendship, and family. He frequently risks his own safety to defend what is right, aiding individuals or confronting broader injustices.

Uniquely for the series, Alfred ages from childhood to adulthood. This progression allows viewers to witness his maturation and evolving responsibilities, shifting from youthful adventures to tackling complex societal issues. He actively resists fascism, supports refugees fleeing apartheid, advocates for animal rights, and campaigns against whale hunting, becoming a force for positive change.

As an adult, Alfred engages in political and social activism. He plays a role in his homeland's transition from an absolute monarchy to a constitutional democracy with elected leadership. His staunch opposition to tyranny centers on his conflict with Dolf, a schoolmate turned fascist dictator. Alfred faces imprisonment under Dolf's regime but contributes to its downfall through resistance. Later, he continues confronting Dolf's criminal enterprises, including illegal arms dealing.

Alfred's personal relationships further define him. He forms a romantic bond with Winnie, a black duck refugee, demonstrating his commitment to racial equality and solidarity. His close friendships include figures like Professor Paljas (also known as Boffin), an inventor whose advanced technology aids their adventures, underscoring Alfred's belief in cooperation and mutual support.

Alfred's adventures often incorporate surreal elements like space travel in advanced vessels or encounters with fantastical beings. These experiences consistently connect back to real-world themes such as environmental conservation and social justice. His enduring optimism and resilience, forged through early adversity, drive his lifelong mission to foster a more equitable and compassionate society.