A slime girl in a slime girl tf (transformation) story is often a fictional character. She is typically made of slime or has slime - like properties. Usually, she can change her form or interact with the environment in unique ways due to her slime nature.
Slimes in these novels are often depicted as having a gelatinous, amorphous form. They can usually change shape to some extent, which gives them an advantage in various situations, like squeezing through small spaces.
In certain fantasy tales, slime girls are depicted as friendly and helpful beings. They might live in a hidden part of the forest and befriend a lost traveler. The slime girl could use her slime to create a path through a difficult terrain for the traveler to reach safety.
Video games often give slime girls backstories that explain their existence in the game world. Some are created through magical experiments, while others are natural inhabitants of a slime - filled realm. Their role in the game can range from being a side quest giver to a main character in the game's story.