In this Step-by-step tutorial I will show you how to make a lightning bolt effect similar to the one from the Flash movie (DCU) using a Niagara particle system.
https://dev.epicgames.com/community/learning/tutorials/qEw2/unreal-engine-fortnite-unreal-5-8-how-to-make-the-flash-lightning-bolt-effect-using-niagara-full-tutorial