Saint is a Green Fluffy Slugcat from Rain world, she is incredibly peaceful and tame, very smart.
Saint was made as the Cure to the cycle in Rain world. the cycle keeps all creatures alive, by reviving them every day. She is referred to as "The Triple Affirmative" by the Iterators.  Saint was made by an Iterator called Silver of Straw, An Iterator held in high regard for being the only one to allegedly achieve self-destruction. She broadcasted the “Triple Affirmative” to the rest of the Iterator