The first enemy you fight. Weak enough to be defeated by unupgraded reinforcements goblins are known to any decent kingdom rush player as "cannon fodder." using what appears to be a stick as a weapon these humanoids are the weakest in the game serving only as a slight distraction for the tougher armored orcs and even tougher and dangerous club wielding ogres. Later in the game they are spawned to give the player free money, as by that point towers are usually upgraded and dangerous and are able to eliminate a horde of 50 goblins quickly and effectively. No matter how many goblins appear on screen do not waste fire rain or reinforcements on these pitiful creatures. Your towers (without the special attacks) will cull their numbers rapidly. 
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