Kelli Berglund put on fifteen pounds of muscle for the role of Crystal Tyler.
Stephen Amell has been a lifelong professional wrestling fan. As a child, he attended WrestleMania VI (1990), and later worked a match for WWE at Summerslam in 2015.
Stephen Amell has had a couple of actual wrestling matches and appearances with the biggest promotions WWE & AEW. Industry people applauded his performances.
Coincidentally, the wrestler Edge starred in the series Vikings (2013) with Alexander Ludwig, who plays Ace.