Algarick Ogglebert (a.k.a. Jurassic the Red and Oiler), is the father of Alvin the Treacherous and the husband of Excellinor the Witch. He is also the son of Thugheart and the second Chief of the Outcast Tribe.
Algarick was said to be quite fearsome. He is never seen at all by anyone in the books, so it is assumed that he is deceased.