Damion Poitier (Goldface) played characters in DC's rival, Marvel's, movies as Thanos during the mid-credit scene of The Avengers (2012), and had a minor role in Captain America: Civil War (2016)
In the comics, Goldface was temporarily married to the Blacksmith, aka Amunet Black. Blacksmith used a sample of the formula that gave Goldface his powers to grant her the ability to manipulate metal, which Amunet has used both as an enemy and later as an ally of Team Flash against the Thinker.
Just like Sherloque's name is a reference to Sherlock Holmes, Renee's refers to Irene Adler, a rival and love interest of the detective. Also, Adler is German for Eagle.
This is the first episode of Season 5 where Nora appears, but doesn't interact with either Barry or Iris.
In DC comics, Goldface was originally a villian of Hal Jordan aka Green Lantern.