|Chronological and political information|
Tosh was the herd-mother of a rancor tribe that belonged to the Singing Mountain Clan on Dathomir. According to a New Republic Intelligence report, Tosh was the largest and oldest rancor ever cataloged. She was the mother of Dhum and Ichor, who was killed in battle against the Nightsisters.
Tosh was very capable on the battlefield, aiding the Singing Mountain Clan using varied primitive weapons. In one instance, after seeing an Imperial walker murder her daughter Ichor, she went on a rampage, completely smashing several walkers and then stomping on a Nightsister who threatened Luke Skywalker. She was capable of scaling steep cliffs and crossing large crevasses effectively while carrying both passengers and heavy cargo. She also was known for being one of the few rancor to be able to read and write and began to teach some other rancors these skills.
- The Courtship of Princess Leia (First appearance)