“Drozdov captivated audiences in the late 1990s with his time spent in the Legion of Doom teaming with Animal and his Droz’s World vignettes,” the WWE wrote in their statement.

Source: https://www.huffpost.com/entry/darren-drozdov-wwe-star-paralyzed-in-the-ring-dead-at-54_n_64a067a7e4b0035bc5c733b6

Sarah writes Ivy like no one else, and Season 4 will explore Ivy more than we have," series co-creator Patrick Schumacker previously told about Harley Quinn season 4. "There's her new role with the Legion of Doom.

Source: https://comicbook.com/dc/news/harley-quinn-season-4-premiere-date-confirmed-by-max/

The first two seasons showed Harley trying her hand at becoming a bona fide villain in her own right in an attempt to join the Legion of Doom.

Source: https://collider.com/harley-quinn-valentines-day-special-trailer/