is a dark brown tom. He is born to Ottersplash
along with his littermates Reedtail
He an his siblings are very playful in the RiverClan camp, often playing games in the middle of the camp. He appears on a kit-patrol to find Blackkit in the kit-patrol and he pauses to tell the other kits that he scents Blackkit. Crookedjaw moves out of the way to reveal Blackkit and Loudkit along with his siblings and Skykit pounce on top of the tiny black tom.
Loudkit is soon made an apprentice, his mentor is Oakheart. He's very eager to learn and he boasts to his siblings that he'll be the first to climb Sunningrocks. As his mentor leads him out of camp Crookedjaw asks if he wants to come and train with Sedgepaw and Crookedjaw. Loudpaw begs Oakheart to let him. Soon after he asks if he can swim, commenting that as kits they had only swam around the reed-beds in RiverClan's camp. Crookedjaw tells him that they couldn't because it was too cold, and he adds that Ottersplash wouldn't want him bringing her kits back with whitecough. After ThunderClan reclaims Sunningrocks Loudpaw flexes his claws and asks if they can practice battle moves to take the rocks back.
Soon after he is made a warrior with the name of Loudbelly. He goes on patrol with Crookedjaw and Piketooth and his stomach loudly rumbles. Piketooth comments that he knows how Loudbelly got his name and Loudbelly protests, saying that he'd only had a half of a sparrow in two days to eat.
Loudbelly later receives an apprentice of his own, Silverpaw. He participates in the battle at the gorge, attacking Fireheart, he growls that Fireheart should have never set a paw on RiverClan territory. But as Tigerclaw comes with backup warriors he flees back farther into his territory.
When the Clans are leaving to go to their new home, Loudbelly stays behind with Frostfur, Speckletail, and Shadepelt to sit vigil for Mudfur RiverClan's medicine cat. He remarks that he's too old to travel on the Great Journey, and he'd rather stay behind with the other elders. He does stay and it has been confirmed that he died from starvation later, after the Clans left.