Actors

Actor

Hartley Rathaway / Pied Piper

Actor

Young Barry Allen, Young Barry (archive footage) (uncredited)

Actor

Oliver Queen / Green Arrow, Oliver Queen / Green Arrow / The Spectre, Oliver Queen / Green Arrow / Dark Arrow

Actor

Eobard Thawne / Reverse-Flash, Eobard Thawne

Actor

Esperanza Garcia / Ultraviolet

Actor

Taylor Downs

Actor

Felicity Smoak

Actor

Gorilla Grodd (voice)

Actor

Grace Gibbons

Actor

Norvock

Actor

Linda Park, Linda Park / Dr. Light

Actor

Dr. Vanessa Ambres

Actor

Mick Rory / Heat Wave, Mick Rory (voice)

Actor

Dr. Tina McGee, Tina McGee (archive footage) (uncredited)

Actor

Francine West

Actor

Grace Gibbons / Cicada II

Actor

Reporter, News Reporter, News Anchor, KPJT Reporter

Actor

Officer Jones

Actor

Amunet Black / Blacksmith

Actor

Keith / Goldface