Born in America, Isaac Grey was raised in a family of law workers and medical personnel. He spent a small portion of his childhood in America with the Ashbrook family, where knowing both Anthony Ashbrook and Jessica Ashbrook, before moving to the United Kingdom with his family.

He lived a fairly normal life, pursuing similar lines of education as his family in law and medical. However, he strayed from the path somewhat. Rather than going to be a doctor or a Law Enforcement officer, he joined the military. Where he served for a few years before being medically discharged after taking a bullet in the back.

After his medical discharge, he travelled back to the United States of America. He got back in touch with the Ashbrook Twins, Anthony and Jessica, to which they all made their way to the State of San Andreas. Isaac found small work to keep himself sheltered and fed until he found work elsewhere. Isaac applied to become a member of the San Andreas Security Services before withdrawing his application and joining Jessica Ashbrook in becoming a State Prosecutor for the Department of Justice.
The Department of Justice wasn't everything he had hoped for, so he applied to become a Law Enforcement Officer with the Los Santos Police Department. However, he was denied that opportunity. Afterwards, he resigned from the Department of Justice.
After a couple months, he was given the opportunity to work in the Department of Commerce and Labor. Searching for something different, he fit in very quickly working alongside Charlotte Baker, Wyatt McKenzie and Samantha Hark.

Nowadays Isaac can be found working most of his time in the Department of Commerce and Labor, assisting those running Businesses, wanting to run a business, and even giving legal advice to keep Businesses out of trouble.

Quotes:

• "Well, that's something"
• "I'm going to do something I don't need to do."
• "If people don't like what I have to say, that's a whole lot of not my problem."

Trivia:

• Isaac has a scar on his back from a gunshot wound he recieved in his time in the military.
• Isaac will completely refuse to drive or ride motorcycles of any kind.
• Although he doesn't fly nowadays, Isaac learnt how to pilot in the military.
• Isaac keeps an aged Navy Revolver hidden away. The only distinguishable feature before recieving a serial number was an etched "J.G." in the handle.