On the sides of her head, there something that looks like wings or ribbons. Because of that, that is how she is portrayed in fanart. But, it is sometimes drawn without them or as if it were a part of her hair.
She is seen paired with Konngara, due to the fact that they both appear when you choose the Jigoku Route.
Kikuri has been portrayed as impossible to defeat because some players have trouble defeating her.
Hence the catchphrase "You'll never defeat us!" is applied to her in Western fanworks.