The Ultimate Vampire Resource and Directory

Legends of Tomorrow was created with secondary characters from Arrow and The Flash. It is set in the Arrowverse, with each episode taking place in a different time period.

The heroes, and villains, that make up the team were drawn from other shows in the Arrowverse, to better give them their own spotlight away from the series they debuted on. The Legends travel through time in a timeship, thwarting those who would wreck the timeline or alter it for their own gain.

The series is tied for third place in the Arrowverse with Supergirl. As of 2017 it is in it's third season.