While the 2004 animated series The Batman is often remembered for its radical reimagining of Gotham’s rogues' gallery—giving us a parkour-loving Joker and a beastial Riddler—it also served as the foundational stone for a new animated Justice League. At the center of that expansion was the scarlet speedster himself: The Flash.

: The series finale, where he joins the full Justice League to defend Earth against the alien invasion force known as The Joining "The Joining, Part 2"

• If you have a short clip, note runtime, visible cast/costumes, production values, any credits or watermark, and key lines—these help identify whether it’s a fan film, a TV episode, or a game cutscene.
• For comics: check issue numbers and publication dates around 2003–2005 of Detective Comics, Batman, The Flash, and Justice League for crossovers.
• For animation: check episode guides for The Batman (2004), Justice League, and Justice League Unlimited (2001–2006) for episodes featuring the Flash.

Epilogue – Six Weeks Later

| Feature | Description | |---------|-------------| | Helmet/Wings | Replaced with raised red ridges and jagged yellow bolts | | Chest emblem | Yellow oval with red lightning bolt (similar to comics) | | Suit texture | Armor-like panels (consistent with show’s robotic style) |