IcebergClan lives inside an iceberg. Their camp was never found by the other clans, but they have been in some battles. There is a cold river running out of the iceberg and they like to swim in it and use it for battle.
Kittypets. Loners, and rouges: https://scratch.mit.edu/studios/5516992/
Credit to @Derp_Catz for the idea
Attention, all versions of the name Moon, like Moonstar or Luna, are forbidden. Plz be creative and don't just use moon every time!