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Boulderpaw is a large, muscular, dark gray tom with clear blue eyes. He is just like his mentor: he hates kittypets and is great at fighting.
- The dark gray tom was found by near the EagleClan border. The patrol that found him questioned him, asking where he came from and what his name was. He said he didn't know, and that he didn't remember anything. The patrol brought him back to HawkClan's camp, and asked Stonestar if he could stay in HawkClan. He said yes, as they needed more warriors and he couldn't leave him to die.
- A few days later, he was made an apprentice, Boulderpaw, and given Dustfang as a mentor. At first he was unhappy that Dustfang was his mentor, as he didn't seem to like him, but the two quickly bonded.
- Boulderpaw and Dustfang go to the Twoleg Place, as a kittypet as recently been trespassing on HawkClan territory.
- Boulderpaw is based on a cat from a fanfiction Wolfspirit wrote.