The 26-year-old from Simbu credits Kumuls teammates Wellington and Stanton Albert for helping him develop as a player on and off the field, and teaching him “respect and humility”.
Isaac said: “I’m so excited to represent my country alongside the big boys. As well as Wellington and Stanton, I also went to school with Justin Olam and I’ve been following him in the NRL.
“Every week I used to check the Melbourne Storm team list hoping he would be in it, and I was so excited when he finally made his debut this year. I’m so happy we’re now playing together for the Kumuls.”