Chamo is the Saint of "Swamp," widely considered the second most powerful person in history after the Saint of one flower. She's had her powers for roughly seven years now. She's a frail girl who dresses in a check-patterned frilly dress and a buffoon hat, usually carrying around a green foxtail. Beyond her appearance, though, she's known for being selfish, uncooperative, easily bored and angered—and has a tendency to want to kill anything that annoys her. Her grotesque power makes her feared by enemies and allies alike. Fremy particularly prioritized her as a target.
Her Saint power works through her stomach, which functions as a literal swamp ecosystem where her creature minions live. She doesn't eat normal food; instead she consumes animals and kyouma that interest her, then uses their components to create new pets or strengthen existing ones. Her collection ranges from mouse-sized creatures to things bigger than humans, all housed inside her and completely loyal to her—they'll even sacrifice themselves to protect her and can regenerate from most fatal injuries within seconds. She summons them using the green foxtail to make herself vomit them up when needed.
Chamo genuinely cares about her pets and gets furious if anyone hurts them. She can command over 70 at once, essentially fielding a whole monster army. Not all serve combat roles; smaller ones work as reconnaissance scouts both above and below ground. The downside is that since her pets are technically aquatic creatures, they're particularly vulnerable to fire and extreme heat.
Content compiled by AnimeList.moe from publicly available sources.