From Halopedia, the Halo wiki
Alexander Seropian was the initial founder, President and CEO of Bungie Studios. Seropian left Bungie in 2004 and, along with other ex-Bungie employees, went on to create Wideload Games, another game company.
Wideload's first project is Stubbs the Zombie in "Rebel Without a Pulse", a bizarre 3D-Action-adventure, where the player takes control of the zombie Stubbs. Rebel Without a Pulse features black humor, innovative gameplay and an exciting story line. It uses a heavily modified version of the Halo-game engine. It was published in fall 2005 for Macintosh, Windows-PCs, and Xbox.
In the Halo universe, a building called The Seropian is a reference to Alex.