Alpha Zombie
From Halopedia, the Halo wiki
Alpha Zombie is a Halo 3 Infection game type variant. In this variation and game type, the players who start the match as a zombie are more powerful than those they kill and infect. The Alpha Zombie can run faster and can jump higher than the normal zombie. You can also change the attributes of the Alpha Zombie and the regular infected Zombies in the edit gametype section of the Custom Games pregame lobby. You can also increase the points that a player can receive when they kill the Alpha Zombie, or even make the Alpha zombie weaker than the zombies infected. The Alpha Zombie also refers to the starting zombie of each round whether or not the Alpha Zombie gametype is selected.
