The hunk has become one of the most recognizable men in Australia thanks to his stint on The Bachelorette and The Bachelor.
But fans appeared shocked when they were introduced to Matthew 'Matty J' Johnson's three brothers during the finale.
Avid viewers pointed out the differences in looks between the four brothers as he introduced them to his finalists, Laura Byrne and Elise Stacy.
'He sure cleaned up in the gene pool!' Fans react to seeing The Bachelor Matty J's family as he prepares to say 'I love you' to his winning lady
'Well Matty J is definitely the hot one in the family,' one user tweeted.
'Matty sure cleaned up in the gene pool' and 'geez Matty got the looks in the family!' quickly followed on the social media platform.
Matty's sister Kate was not present within the Thailand finale, as Matty revealed she was pregnant and couldn't fly.
Brothers Dave and Adam appeared to give their approval of both Laura and Elise ahead of Matty's final date with both ladies
'Sure cleaned up': Bachelor