The Reverse-Flash

A villain who cuts a chilling silhouette in the Modern Age, The Reverse-Flash made their DC Universe entrance in the pages of Batman/Superman #1 in 2013, courtesy of the creative team of Greg Pak, Jae Lee, and Ben Oliver. With only a handful of catalog appearances, this is a rare presence — one who has nonetheless shared the page with heavy hitters like Superman, Martian Manhunter, and Daniel West across titles including Justice League and the wonderfully offbeat The Green Team: Teen Trillionaires. The company alone signals a character woven into the wider fabric of DC's Modern Age tapestry, and for collectors who love tracking down figures at the edges of the universe's mythology, that scarcity only adds to the intrigue.