Days after saying he had booked a flight to Australia, the founder of a group that advocates for legal rape has taunted authorities with threats to sneak in by boat.
The Department of Immigration will continue to monitor Return of Kings leader Daryush "Roosh" Valizadeh as his "neomasculinist" followers plan gatherings in multiple cities on Saturday.
Immigration Minister Peter Dutton says he is offended by reports of the "tribal meetings".
"In the past people advocating violence against women have had their visa refused or cancelled," an immigration spokeswoman said in a statement on Tuesday.
But Mr Valizadeh, who has not applied for a visa, said he had the funds to enter the country through Darwin by private yacht from Indonesia or East Timor.
"Their borders are weak. I'll get in," the American tweeted along with a picture of Australia with arrows pointing to Western Australia and the Northern Territory.
"I won't be stopped."
Followers are set to gather in Sydney, Melbourne, Brisbane and Perth on Saturday, with similar gatherings in 43 other countries.
Women, transgender men and homosexual men are banned from the meeting and supporters have been urged to travel in pairs or groups using indirect routes to avoid "green-haired female activists or male feminists" following them.
Mr Valizadeh believes rape should be legal on private property as a means to prevent rape because that way "women will never enter a man's apartment without accepting that sex will happen".
A counter-rally has been planned by a group called the Mad F***ing Witches, who have called on supporters to dress as witches to mock Return of the Kings.
Spokeswoman Jennie Hill said some people told her to ignore the group.
"The problem for us is that we know there are some young men who will listen to these ideas," she told AAP.
Former sex-discrimination commissioner Elizabeth Broderick tweeted on Monday night: "The views espoused by Return of Kings are deeply offensive and have no place in Australia."
Online petitions have also started to try to stop the events.
