Fans of The Flash will eventually get to meet Sue Dibney, the Elongated Man's comic book love interest and wife. Ralph Dibney was introduced in the fourth episode of the season, titled 'Elongated Journey Into Night.' The Dibneys share one of the few, stable and lasting relationships in comics, making her a key part of the character's history.
Over the summer, it was reported that Hartley Sawyer would be joining The Flash in a recurring role as The Elongated Man/Ralph Dibney. As a new member of Team Flash, it was reported that "brash and loud" Ralph would clash with Barry (Grant Gustin) over "how to be a good guy." The character's ability to stretch and contort his body is set to create one of the biggest mysteries of the season. In Ralph's first appearance on the series, it was revealed that Ralph was exposed by Barry as a dirty cop and fired from the police department. The two have hated each other ever since. After gaining superpowers, Ralph chose to be trained in the use of his abilities by joining Team Flash.
One important element from the comic book character's backstory—his wife—was noticeably absent from The Flash's iteration of the character. According to showrunner Andrew Kreisberg, Sue Dibney hasn't been overlooked. Kreisberg says that it's important for fans to "get to know Ralph" before meeting Sue.
Ralph and Sue are endgame, as the kids like to say, so you don’t want to bring her in too soon. But that’s definitely in our plan. Not for this year, but we’ll see.
Kreisberg's remarks about saving Sue for another year suggests that Elongated Man will remain on the show for quite some time.
Sue Dearbon—later Sue Dibney—first appeared in The Flash #119. The character was a socialite who met and fell in love with Elongated Man. After the two were married, Sue accompanied her husband on many of his adventures. For fans, the relationship between Sue and Ralph had become a bright spot in a time where comics were growing darker. In a controversial move, DC Comics killed off Sue in 2004, upsetting fans. However, Sue's death stuck for years, as Ralph's grief became a motivating factor in many storylines.
Season 4 of The Flash continues with 'When Harry met Harry...' on Tuesday, November 14th on The CW.