Character: boco (thomas and friends)
BoCo (also known as British railways D5702) is a mixed-traffic engine and a supportive character on Thomas and friends. He primarily works on Edward's Branch Line on the island of Sodor. he is a kind diesel, who is firm but fair, and not afraid to speak his mind.
BoCo is a British Railways metropolitan-vickers type 2 Class 28, he is a long green diesel with a Co-Bo arrangement (6 powered wheels in the front, 4 powered wheels in the back), a grey roof, and depending on media, a yellow or grey face.