For years, Bob Harper and Jillian Michaels appeared to have great chemistry onscreen while filming "The Biggest Loser" together. But a new docuseries about the NBC weight-loss competition has fans wondering if the dynamic duo actually got along in real life.

For those less familiar, let's take a look at who Jillian Michaels is and what she's been up to since the Biggest Loser wrapped – and what we know so far about her decision not to appear in the Netflix docuseries,

Jillian Michaels rose to fame after being a trainer on The Biggest Loser — which was met with controversy from time to time — but where is she now? NBC's The Biggest Loser, which premiered in 2004, followed a group of people deemed overweight who would compete in a 30-week competition.