Barry asks Green Arrow for help when aliens attack Central City, but when they realize that won't be enough, they bring the Legends and Supergirl in on the battle.
Episode rating
Cast of episode
87
7
4
1
1
- Barry Allen
- Wally West
- Caitlin Snow
- Dr. Harry Wells
- Cisco Ramon
- Iris West-Allen
- Joe West
- Oliver Queen
- Firestorm
- Dr. Martin Stein
- Speedy
- Sara Lance
- Mick Rory
- John Diggle
- Felicity Smoak
- Ray Palmer
- Kara Danvers
- Lyla Michaels
- Dr. Lily Stein
- Agent Smith
- President
- Reporter
- NSA Official
- Dominator