Rotten’s origin is unknown. The myth says that a rain of Stardust fell in a puddle of mud in a particularly dark corner of the swamp area of the forest and created a monster who’s able to absorb souls. Now Rotten travels from dark corner to dark corner collecting souls from dead monsters. Souls make him stronger, but they corrupt and rot his very own spirit. The more powerful he becomes, the stinkier he gets. He can use his collection to resurrect or heal others, but he’s greedy and will rarely help anyone.

Rotten is an Earth Support monster who can Resurrect an ally with full Life. He can also Resurrect an ally with 1% Life and gain an extra turn, but he'll also gain Sunburn. Rotten's skills include Positive Effect Removals, Nightmares, Damage Protection, Control Immunity, and Life Regeneration. He has an Evolving Trait: at rank 0, he's Immune to Freeze, at rank 1, he gains Immunity to Burn and Ignite and, at rank 3, he gains 50% Damage Protection at the start of every battle.