Spawning from large organic globules (Giggi Sacs) in dark caves Giggi are relatively featureless. They have grey bodies with purple markings, small stubby arms, and round mouths with small though sharp teeth used to drain their victims bodily fluids.
Giggi are capable of producing their own poison, however it is very weak thus they leech onto and drain the blood of other beings including Hunters to nourish themselves and grow bigger aswell as create their poison.
Giggi are not exactly aggressive but they are gluttonous, trying to chase down and leech onto anything they deem as a prey item, though they do flee upon exposure to light like that from a torch.
Despite their parents only really living in the Tundra Giggi's and their cocoons can be found in all kinds of areas from the Volcano to the Flooded Forest.
Wyvern larvae. Reasonably fecund, they can survive in any dark environment. Giggi are sensitive to light and heat, and so avoid torches. They are also known to leech from other animals, converting it into toxins.
Remarkably fecund wyvern larvae that can flourish in any dark environment. They survive by leeching onto other animals, sucking their blood, and then converting it to toxins. Giggi victims are advised to shake them off by rolling vigorously on the ground.
As a Giggi sucks the hunter's blood, it starts to increase in size, but will only reach a certain body mass.
Giggi can be found in every environment in Monster Hunter 3, but its adult form, Gigginox, can only be found in the Tundra.