Also known as: 松野おそ松, おそ松
Title character of Osomatsu-Kun and its spin-offs.
He is the eldest brother in a group of Sextuplets. Despite being their leader, he often is very unreliable and bull-headed.
Though indistinguishable from his brothers in Osomatsu-kun, in Osomatsu-San he is associated with the color red and a distinctive Grin on his face.