James Horwill has urged the Wallabies to unleash the beast, nominating Lukhan Salakaia-Loto as the firebrand needed to set the Rugby World Cup tone.
Former Test captain Horwill led Australia at the 2011 World Cup and spent the final years of his career in the northern hemisphere with Harlequins in England.
He has kept a keen eye on rugby in that part of the world and is adamant there is one thing the Wallabies need when the showpiece returns to Australia next year.
"We've seen the way the game's going, the way the Six Nations was played ... the physical battle's really important," he told reporters at an event marking 500 days until World Cup kick-off.
Hulking lock Will Skelton changed last year's British and Irish Lions series with his barnstorming form after missing game one through injury.
