The family run their own recycling plant from their home at Acropolis Cottage, and are headed by Costaaas, a male sheep from Greece, who is married to Baaalwen, a black Welsh ewe, (played by Tamsin Heatley) whom he supposedly met in a Milanese choir.
The couple live with their daughter Meeegan, her husband Meeelvyn, and their twins called Jaaason and Meeedea (named after the Greek mythological figures Jason and Medea, who also feature in opera).
The fifteenth episode features the appearance of Aurora, Baaalwen's older sister, who has her nephew called Oscar, who never married an ewe or had children.
Baaalwen and Costaaas live with Meeegan's older sister Alice, her husband Louis, and their three children called Terrence, Carol and David.
[1] In April 2006 the rights to air the show were purchased by Al Jazeera, the Arabic news network, after Sheikha Mozah, the wife of the Emir of Qatar and channel founder supposedly "fell in love with" them.