Kosh, voiced by Rob Paulsen, Jeff Bennett, and Pete Sepenuk, is a character in the Land Before Time films and television series. He is an Ankylosaurus, which is referred to as a "Clubtail" by the Land Before Time characters. Appearing frequently in the show, usually in minor roles, his name was revealed in the end credits of the TV episode "The Star Day Celebration", whereas he is only referred to as "Mr. Clubtail" in the films, and in the other episodes. But his full name is "Mr. Kosh Clubtail".
It is implied that Kosh was not part of the combined herds who migrated to the Great Valley during the events of the original The Land Before Time, as he did not appear until the third film, The Land Before Time III: The Time of the Great Giving, but has subsequently continued to make supporting appearances in the later films and TV series.However,at the end of the second movie,there's a sleeping Ankylosaurus in the credits.This may or may not be Kosh.Also, in the flashback scene in the seventh film, The Land Before Time VII: The Stone of Cold Fire, he was not shown hiking to the Great Valley with the other adult dinosaurs. It is possible that he either moved into the Great Valley sometime between the events of The Land Before Time II: The Great Valley Adventure and The Land Before Time III: The Time of the Great Giving, or that he was already living there when the combined herds arrived.
In The LBT-Humanization Series, He's A Proud, Rich, Jurassic Grape Tycoon Manger.