Even Jay Garrick () comes along to save Barry.

Source: https://collider.com/the-flash-series-finale-ending-explained/

Instead, the DCU could turn to the original DC Flash, Jay Garrick, as a conscious way to differentiate from the DCEU, or even introduce multiple Flashes, following 's precedent of legacy superheroes.

Source: https://screenrant.com/dcu-timeline-the-flash-return-blue-beetle/

Meanwhile on Earth-1, Caitlin makes Jay Garrick a drug that gives him his powers back in order to fend off an attack.

Source: https://www.themarysue.com/who-is-zoom-in-the-flash-answered/

Seeing how each DC hero is adapted in the style is fascinating to see, especially when the story includes atypical heroes such as Starman and Jay Garrick AKA the original Flash from the Justice Society of America.

Source: https://www.cbr.com/dc-comics-multiverse-best-period-pieces/

The 27th Century’s Academy of Science sent John Fox to recruit Jay Garrick, Barry Allen, or Wally West to help them.

Source: https://www.cbr.com/every-flashes-comic-origin-in-chronological-order/

Ultimately, "The Flash" makes no sense, and things are no different with the Jay Garrick cameo.

Source: https://www.slashfilm.com/1319787/thats-not-teddy-sears-in-the-flash-but-it-looks-like-him/

Unknowingly sending himself to Earth-Two after vibrating out of his own world, Barry visits a parallel reality where he meets the original Flash, the now-retired Jay Garrick.

Source: https://screenrant.com/15-most-important-flash-moments-defined-dc-history/