Rachel Frederickson won The Biggest Loser Season 15 in 2014 after losing a staggering 155 pounds, dropping from 260 pounds to just 105, meaning she’d shed nearly 60% of her body weight over the course of the competition. When she stepped on stage at the finale, viewers, fellow contestants, and even the show’s trainers appeared visibly stunned.

Carla Triplett made The Biggest Loser history when she appeared on the show’s seventh season in 2009 at 379 pounds — the heaviest for a contestant at the time.

Talking about her portrayal on the show with Entertainment Weekly in 2009, she said, “I was being portrayed like a villain who’s mean and nasty, and I’m not really a mean and nasty person!”