The senior figure of the group is 33-year-old Kepu, of Tongan descent, who has amassed 105 caps, a record for a Wallabies prop.
When Australia won their first World Cup in 1991, the team included Tongan-born powerhouse Willie Ofahengaue.
Eight years later, the triumphant 1999 Wallabies side included another explosive backrower of Tongan heritage in Toutai Kefu.
But Ofahengaue and Kefu were the only Polynesians in their respective starting XVs.