To catch up on all SAS Australia 2020 recaps and gossip, check out Mamamia’s recaps and visit our SAS Australia hub page.

For about a decade, Shannan Ponton was a familiar face on Australian TV.

The 46-year-old quickly became a household name after his stint on The Biggest Loser, where he worked as a personal trainer between 2007 and 2017.

Now, he's back on our screens as a part of Channel Seven's very intense new reality show, SAS Australia,where he's taking on SAS training under the direction of a team of angry British ex-Special Forces soldiers.

"This was the toughest test of my life," Shannan wrote on Instagram in the lead up to the show.

"100% unscripted reality tv. Not one retake or production crew to check in. We were totally isolated. I did find out how far I could go. No question! Not much food, not much sleep, but plenty of energy and support from most of the recruits."

Watch the trailer for SAS Australia below. Post continues after video.

But behind the scenes, the father-of-three has gone through his own challenges.

After having a personal brush with melanoma in 2010, Shannan recently opened up about his son’s bone cancer diagnosis, which his wife found out about when he was getting ready to filmSAS Australia.

From his career to his family life, here's everything we know about Shannan Ponton.

His time onThe Biggest Loser.

Australia first met Shannan on season two of The Biggest Loser back in 2007 when he joined the show as a personal trainer alongside Michelle Bridges and Steve 'Commando' Willis.

From the outside, the three trainers appeared to work well together on the show. However, tension clearly rose during the 2015 season ofTBL Familieswhen couple Michelle and Commando were accused of forming an alliance together.

During one episode, Shannan called out their relationship and claimed the pair were working together against his blue team and Tiffany's Hall white team.

"You guys are driving to and from work together in a car, you’re not going to sit there and go, 'Oh sorry babe, my team voted you out today'," he said.

Michelle denied the alliance and instead accused the blue and white team of working together.

"That’s bulls***," Shannan responded.

"You two are in a relationship and I’m over the smoke and mirrors ... You’ve got a partner, you would never vote your partner out."

"There’s no doubt that the alliance emerged from the relationship that exists between Commando and Michelle," he later said on the show.

Shannan later defended his comments during an interview with the DailyTelegraph and confirmed they weren't edited on the show.

"It wasn’t contrived or edited at all. [What you saw on screen] was a fair representation to get my message across," Shannan told the publication.

"I stand behind it, a hundred per cent. They’re a couple!"

After the season ended, the show was picked up again in 2017. But this time Michelle, Commando and Tiffany didn’t return. Instead, Shannan worked alongside new trainer Libby Babet before the show was later axed.

His family life and melanoma scare.

Shannan tied the knot to his wife Kylie Stray in 2010 and the pair went on to have three children together, Max, Mila and Bronx.

In April this year, the couple celebrated their 10 year wedding anniversary.

“Happy tenth anniversary to our captain. In a crystal ball ten years ago I could of only wished to have what we have together now,” Shannan wrote on Instagram alongside a photo of him and Kylie.

“Love you and all you’ve given me.”

2010 was also the year Shannan had a brush with melanoma.

At the time the couple were on a holiday in Bali when Kylie noticed an unusual mole on Shannan’s leg.

"Kylie noticed a mole at the top of my right leg, just under the crease of my bum, which she thought looked bad," he told New Idea in 2017.

"I didn’t give it a second thought but she called my dad and got him to make me an appointment the day we landed."

"The doctor didn’t downplay it. He said it was serious, but I was very lucky. The melanoma was 0.6mm deep. If it gets to 1mm it can be in your blood and you’re in all sorts of trouble," he said.

Shannan told the publication that he had a 15cm area cut away to remove tissue around the mole.

"Kylie saved my bacon. If she hadn’t spotted it I’m not sure I would… and things could have been very different."

In September, the 46-year-old appeared on theAll New Monty: Guys & Galsto raise awareness for men’s health.

"If I’m brave enough to get my gear off, please be brave enough to get yourself checked," he told Channel Seven at the time.

The father of three is also an ambassador for ca