First let’s start at the beginning with Oliver Queen aka The Green Arrow
Second, we have Sara Lance AKA Black Canary
But lets not forget that Laurel Lance takes over her sister’s role when Sara is killed by Oliver’s sister.
Next comes Roy Harper or better known as Arsenal.
Meanwhile, in Central City, a freak accident turns Barry Allen into The Flash.
The freak accident also creates Firestorm
Then in comes Ray Palmer aka ATOM