Joseph Rosello is a firefighter and three-time competitor on American Ninja Warrior.
Rosello debuted in American Ninja Warrior 5 where he finished the qualifying course with the 11th fastest time.
In the city finals, he couldn't get past the Salmon Ladder. However, he made it there in a quick enough to guarantee a spot in the national finals. He placed 13th in the top 15.
In the national finals, he failed the Half Pipe Attack.
He competed in American Ninja Warrior 6 in Miami for the second time. His qualifying run was cut, but he once again dominated the qualifying course. He finished 6th out of 42 finishers that night.
In the city finals, he got redemption on the Salmon Ladder. However, he fell on the next obstacle that night, the Minefield. Just like last season in the city finals, he placed 13th at the end of the night, and once again advanced to the national finals.
His stage 1 run was cut, but he failed the Half Pipe Attack again.