SPOILER WARNING: This article contains major spoilers for "A Flash of the Lightning," the latest episode of The Flash Season 6.
The Flash may have just slyly introduced Mister Miracle to the Arrowverse.
In "A Flash of the Lightning," the latest episode, Jay Garrick presented Barry Allen with a map of the known multiverse. One Earth at the very top was labeled "Thaddeus Brown," in reference to the first man who wore the Mister Miracle mantle. It is not fully clear which Earth this is; however, judging by Jay's calculations, it has not yet been affected by the upcoming Crisis just yet.
Created by Jack Kirby, Brown debuted in 1971's Mister Miracle #1. He was a short-lived character, dying at the hands of Intergang in his introductory issue. A circus escape artist, he trained the New God Scott Free in the art before his death. After Brown died, Free took up the mantle to avenge his mentor's death. Free, of course, would go on to become the most recognizable character to wear the red, gold and green costume.
By including him on Garrick's multiverse map, The Flash confirms that Mister Miracle exists in the Arrowverse. Additionally, it makes sense the show would choose Brown over Free, as Free will be the subject of Warner Bros.' upcoming New Gods movie, which is based on writer Tom King and artist Mitch Gerads' Mister Miracle miniseries. Since Warner Bros. occasionally prevents the Arrowverse from using film characters, The Flash managed to skirt the issue by choosing Brown over Free and addressing him by his legal name.
It is unclear whether this means Brown -- and thus, his alter ego -- will be involved in "Crisis on Infinite Earths," this year's crossover event. Since he is the only new character mentioned on the map, it seems less like a coincidence and more like foreshadowing. Either way, his inclusion on the multiverse map is a fun little Easter egg for longtime DC fans.
Airing Tuesdays at 8 p.m. on The CW, The Flash stars Grant Gustin, Candice Patton, Carlos Valdes, Danielle Panabaker, Tom Cavanagh, Jesse L. Martin, Danielle Nicolet and Hartley Sawyer.