Denis was born in 1973 on Badu Island in the Torres Strait. He holds a Degree in Visual Arts from Cairns TAFE and a Diploma in Visual Arts in Print Making from the Australian National University in Canberra. His art has been collected by a huge number of prestigious collections and art galleries, with the number now exceeding 46. He has exhibited his art on more that 160 occasions in some of the most prestigious galleryies in the world.
Dennis has won the Telstra National Aboriginal and Torres Strait Islander Art Ward for Works on Paper on three occasions and was an outright winner for a sculpture. He has also won numerous other art awards for his prints.
Initially excelling in lino cuts, Dennis expanded into etchings which have become some of the finest examples of Australian aboriginal art.