While the film portrays the NXT crowd as somewhat against Paige, there were actually a lot of people who cheered her and recognized her from her family's independent wrestling promotion.
Saraya-Jade Bevis said that her Dad was disappointed he was going to be played by Nick Frost because he didn't know who Nick Frost was and he wanted to be played by Ray Winstone, but when he saw Nick Frost performance he said "he's actually pretty good ain't he."
There is another Knight sibling who is not represented in the film, but is briefly featured in the documentary on which it's based. She is the only member of the Knight family who is not a wrestler. She is a dentist.
While Vince Vaugn's character sees the new recruits through all facets of training, there are individual coaches for each individual aspect of the wrestlers' development at the WWE Performance Center. During Paige's training days, the promo class was taught by the late wrestler Dusty Rhodes.
Dwayne Johnson was filming Fast & Furious 6 (2013) in the UK when he discovered the 2012 Channel 4 documentary "The Wrestlers: Fighting with My Family" on TV in his hotel room about a crazy English family of wrestlers. The 'underdog' aspect of it instantly appealed to him, prompting him to contact British writer Stephen Merchant about developing the story into a feature-length biopic. Writer-director Merchant, who also plays Hugh in the film, is actually 2" taller than 'The Rock' with whom he'd earlier co-starred in Fée malgré lui (2010).