An electricity-wielding middle schooler from Toaru Majutsu no Index, nicknamed "Biri Biri" (electrokinesis), among other things.
She is capable of firing a railgun using a coin and turning it into a weapon, capable of destroying objects.
Protagonist of the spinoff manga Toaru Kagaku no Railgun.
In Blue Archive, her halo features a Lightning Bolt. And she has a modified fn f2000 named "Gunvolt" (itself a reference to "Azure Striker Gunvolt", hence the name)