Grizzer was a massiff living on Coruscant during the Clone Wars when Ahsoka Tano was attempting to escape from the Republic military base after she was framed for the murder of Letta Turmond. Grizzer was brought outside by its owner, ARF trooper Hound, to search the area and track down Tano. Grizzer picked up Tano's scent while she was hiding behind a statue. To evade Grizzer she climbed to the top of the statue, causing the animal to lose her scent.