The Terrorist multiplayer character cannot be found anywhere in the single player game. However, the instruction manual for the game lists the Phantom weapon as a 'terrorist favorite', and the Phantom is only found on the Frigate level. The Frigate level is also the only level with hostages, which would likely indicate the involvement of terrorists. This suggests that the Terrorist was once used as an enemy on the Frigate, but was removed and kept in multiplayer.