The 43-year-old allegedly sexually abused women while working as a self-defence trainer.
The man, who was arrested by Armadale Detectives, will front Perth Magistrates Court on Friday over a string of alleged sexual based offences.
Authorities said the incidents occurred between 2013 and 2018 when the man indecently assaulted a number of women while working as a trainer at a self-defence facility in Southern River.
The man has been charged with nine counts of indecent assault, 2 counts of sexual penetration without consent, 2 counts of possess controlled weapon and 2 counts of possess prohibited weapon.
The investigation is ongoing.
If you are, or have been a victim of sexual abuse, or if you have information about someone being abused, please contact police on 131 444.
Green thumbs, families invited to Pinjarra Garden Day
NBL1 West: Devondrick Walker announced as new coach of Mandurah Magic men
Two drivers killed in horror Peel region crash
Arson Squad detectives continue investigation into Port Kennedy house fire
Peel Thunder premiership coach Adam Read to depart club for GWS
Man wanted for questioning over Wellard scooter theft
New murals to transform Coodanup, Madora Bay public spaces during Mandurah Arts Festival
Teen driver allegedly three times over legal alcohol limit in Rockingham
New councillors elected in Rockingham, Mandurah