Steven Van Eyk has been missing for more than two weeks.
The 30-year-old was last seen at Jeeralang West Road, Jeeralang Junction, about 11pm on Sunday, October 25.
Mr Van Eyk’s fiancee Breeana Shiells said the family are missing him a lot.
“His family and friends miss him very much and it has been over two weeks, we are very worried for his safety,” she said.
Ms Shiells said people should not be scared if they spot Mr Van Eyk, but to screenshot their location and contact police.
“Steven is not violent at all, but is likely to flee if he feels like he has been seen,” she said.
“We are appealing to the public to call Triple Zero if they sight Steven or his likeness and share the location where they saw him.”
Ms Shiells also said that Mr Van Eyk has a distinctive walk and run, he “bobs his head a little bit when he moves”.
“Family and friends have been out searching in the area, we all miss him a lot and want him back home,” she said.
“We desperately need people to keep an eye out if they are in the area and with the ‘ring of steel’ removed on the weekend there will be more and more people around.”
Senior Sergeant David Fyfe said Mr Van Eyk is believed to have a headlamp and is moving at night.
“He may be suffering from a medical condition where he may fear coming home, because of the condition,” he said.
“If Steven is keeping an eye on the local media, I want to remind him that something may not be right here, he has left his beautiful partner and children behind.
“Even if he does not reach out to police, I urge him to let either a friend or family member know that he is OK.”
On October 26, a trail camera captured images believed to be of Mr Van Eyk in the Tyers Rd area.
Police located Mr Van Eyk’s 2013 dark grey Holden Captiva at the end of a dirt track, north of Tyers on Tyers Rd on October 30.
Steven is described as Caucasian with short brown hair and blue/ green eyes.
If anyone in the area does sight Mr Van Eyk, police ask that they make a record of the location, for example by screenshotting a GPS point on a mobile phone map or similar and providing that information to police.
Police urge anyone who spots Mr Van Eyk not to approach him, as he is believed to be experiencing a period of ill-health and may be fearful.