Ronald Quantrell was an Earth Alliance Senator. As of 2259, he was chairman of the Babylon 5 Senate Oversight Committee. He was a staunch humanocentrist and was hesitant to support the Babylon Project. Even so, he felt that Earth owed it to late-President Luis Santiago's memory to continue operating Babylon 5. He claimed that the Earth Alliance, after rebuilding its defenses, was now capable of going toe-to-toe with the Minbari, even hinting that Earth would now win with their new ships and weapons.[1]

In the aftermath of the Assault on Narn, Quantrell commented that the Narn were "being bombed back to the stone age". [2]

By mid-2260, Quantrell was no longer a Senator. [3]