[1] Willis left the army in 2004 (the 4th Battalion converted to a special forces unit on 1 February 1997, and was renamed the 2nd Commando Regiment on 19 June 2009).

[3] Willis was known for wearing dark sunglasses, camo pants, and a black sleeveless shirt.

[4] Willis chose to depart The Biggest Loser after the tenth season aired in 2015.

[5] In May 2018, Willis made his acting debut in television soap opera Home and Away, with a guest appearance as an AFP trainer.

[6] Two months later, it was confirmed that Willis had joined the cast of Australian Survivor: Champions vs.