A nephew of accused Claremont serial killer Bradley Robert Edwards claims his uncle is innocent of the charges brought against him.

Adam Edwards has told 9 News Perth his uncle is not a killer and claims the media is "making him look like the most evil person in the world, but he's not."

Bradley Robert Edwards has pleaded not guilty to all charges against him.

"He's the most giving person, who would drop everything to help you out," he said.

"Not for one second do I believe any of [the allegations].