I guess you can say abit of a tsundere. She was the weapon of a much more capable and high ranking wielder before being handed to Ryota, who had his original weapon broken, but eventually she grows to like him and the two get along. She's a nice character deep down, just has a small layer of tsundere on the top. Other than that, she's a fierce fighter, loves a good fight, and loves a good drink to celebrate a victory. Clara is the Heavenly Armament which represents the Claymore.