It looks like we don't have any Biography for J.J. yet.
The Block - Season 10
The Block - Season 17
The Block - Season 6
The Block - Season 4
The Block - Season 19
The Block - Season 13
The Block - Season 15
The Block - Season 8
The Block - Season 20
The Block - Season 14
The Block - Season 16
The Block - Season 5
The Block - Season 9
The Block - Season 2
The Block - Season 1
The Block - Season 12
The Block - Season 11
The Block - Season 3
The Block - Season 18
The Block - Season 7