John Len Ruela Adamo Pearce (born 25 February 1991) is an Australian singer, dancer and children's entertainer best known as a member of Justice Crew, and also a member of the children's band The Wiggles where he wears the purple skivvy alongside Lachlan Gillespie.

Pearce was a member of Justice Crew when the group came to prominence winning the 2010 season of Australia's Got Talent.

[5][6] As "Big Strong John", he wears a purple skivvy, and has an interest in health and exercise.

In January 2023, Pearce received international media attention in response to his viral popularity amongst parents of Wiggles fans, due to his handsome appearance and his promotion of healthy habits.

[7][8] Pearce also worked as a personal trainer and appeared in the 2017 season of Australian Ninja Warrior.