She is a variant of Marinette dupain-cheng (AU Gray Talon) from an unpublished fanfic with a crossover with My Hero Academia, being very different from her canon version that everyone normally knows, her quirk is gum saliva; That is, you can "convert" your saliva into "gum" and create a "bomb" and throw it, exploding it in the form of a bubble of gum which only leaves the sticky gum around it.