Worm's appearance can be seen in Easy and Normal difficulties. He is not encountered in Hard and Expert.
Worm appears starting from Tour of Duty 2 to 6. In Tour of Duty 5, he does not appear in the map Aztec. He works as a reserved bot in maps of Tour of Duty 1.
Worm's skill type is fairly easy, which means he is 25% accurate when firing, has a reaction time of 0.4 seconds, and can detect footsteps. When facing an enemy, he will hold fire for one second and fires non-stop until the enemy dies or Worm runs out of ammo. When reloading, he will retreat.
Worm buys the MP5 Navy for a primary weapon. He will not buy or pick up other weapons. Most likely due to the fact that the MP5 and the Glock share the same type of ammo, he does not switch to his pistol when he has run out of ammo.
Worm is a moderate aggressive bot. He will retreat after spotting a large group of counter-terrorists. Then, he will wait for the enemies to come to his position.
Worm is a part of the Middle Eastern Guerrilla Warfare.