Roth was born in Broker, Liberty City, in 1976. At some point in his life he joined the Jewish Mob together with friend and partner Mori Green, and became one of its most central members. His main job was diamonds dealing.
Roth had deals with Claude Wome for diamonds imported from Africa, one time leading to being arrested.
Events of GTA IV
The Diamonds deal
Roth also had connections with Pegorino Family Capo Ray Boccino. He entered a deal with Ray, which took place in the The Libertonian. Isaac, Mori and two others stood face-to-face with the two men dealing for Ray, Johnny Klebitz and Niko Bellic. While Mori was looking at the diamonds, Luis Fernando Lopez shot Mori down while having his gun through a window. Isaac ran to Mori's side and tried to help him but when he realized he was dead, he snatched the diamonds and ran while Johnny took the money. Soon Isaac was caught and knocked out by Luis, who then stole the diamonds and took them to Gay Tony.
Isaac thought the ambush was set up by Ray and threatened to have him killed. In retaliation, Ray sent Niko to kill Isaac at his base in the Majestic Hotel.
LCPD Database information
First Name: Isaac
Place of Birth: Broker, Liberty City
Affiliations: Linked to Italian American Organized Crime.
- 1997 - Possession Stolen Property
- 2000 - Clean Diamond Act Violation
- Diamond dealer thought to be linked to various Organized Crime Syndicates.
- Arrested in connection to an operation importing illegal conflict diamonds from Africa.
- Works closely with Mori Green.
- GTA IV
The Lost and Damned
The Ballad of Gay Tony
- Along with Niko Bellic, Johnny Klebitz, Luis Lopez, Roman Bellic, Anthony "Gay Tony" Prince, The Cook, and Mori Green, Isaac is one of the eight characters in the GTA IV Era to appear in IV, TLAD and TBoGT.
- Isaac Roth is a reference to Hyman Roth, a character from the movie The Godfather Part II. His beard also supports this.
- Isaac is one of only two characters to interact with the three protagonists. He does the deal with Niko and Johnny, and he gets knocked out by Luis.