The Cerberus Minosaur (Elder Brother) is a Cerberus-themed Minosaur created by the Druidon Tribe from the negative emotions of Sanae Hiiragi, based on her resentment for people who mistreat and abandon their pets.
This Minosaur, along with its little brother, were created from the same host, Sanae.
However when Koh & Melt were weakened and paralyzed by the contagious venom, Koh brazenly let it bite his arm in order to successfully pull off one of its fangs, enabling the Elder to make an antidote for the venom.
Later, it grew to giant form thanks to its host to produce more negative emotions. When KishiryuOh Five Knights had overpowered Tankjoh and Kureon called it to help, it leaped onto the mecha, but it was impaled on the Knight Lance by KishiryuOh before being destroyed.