Barry faced his own lack of evolution over the years while striving to build a future for his growing family. Arc 2: A New World (Episodes 10–13)
The series finale coincided with the birth of Barry and Iris’s daughter, Nora West-Allen.
The final four-part saga brought the series full circle by revisiting the origins of Barry’s journey.
Returned in Episode 9 as The Spectre to help Barry save the newly reborn Multiverse.
Showrunner structured the season into two primary "Graphic Novel" arcs to maximize the limited episode count. Arc 1: Rogue War (Episodes 1–5)