In recognition of his service to the Samoan people, and because he is a descendant of Samoan chiefs, Johnson had the noble title of "Seiuli" bestowed upon him by Malietoa Tanumafili II during his visit there in July 2004. In 2009, he gained Canadian citizenship through his father. He received a partial Samoan pe'a tattoo on his left side in 2003, and in 2017, he had the small "Brahma bull" tattoo on his right arm covered with a larger half-sleeve tattoo of a bull's skull.