Isaias is married to Kristine, and together, they have a 1-year old son. Isaias was very close to his father, but unfortunately his father passed away from cancer in 2002.

Isaias's father used to work in the auto-body repair business and passed on that trait to Isaias. Isaias took ownership of his father's 1967 Dodge A-100 truck after his passing and swore never to get rid of it. He even has dreams of fixing it up with his son and keeping it in the family.

Kristine says that Isaias is a wonderful person with a silly side to him. She predicts that he'll "cry his eyes out" once he finds out that he's on Overhaulin'.