Giant Gar are voracious freshwater predators, found in deep water such as large lakes and major rivers. They can swallow prey of medium size or smaller whole with a natural 20 on the attack die, and creatures who are swallowed suffer an additional 2d4 points of damage automatically each round from acid (most will die of this long before suffocation becomes an issue). Only the smallest weapons (such as daggers, for example) can be used by a swallowed creature, but on the other hand a giant gar has an armor class of just 11 on the inside. Damage at least equal to one quarter of the giant gar’s full hit points must be inflicted in order for a victim to cut its way out.

If a giant gar which has swallowed a victim is attacked by other creatures, there is a chance equal to 1-2 on 1d10 that successful attacks against the fish will cause equal damage to any such victim.