Very Large

A Monster Trait.
From the Book of Engoku:

Description

Creature does not have to go to knees in water due to their large size. It may use melee weapons to attack flying targets. Creature cannot be attacked by melee weapons unless the attacker is flying or Large. Siege weapons do normal damage against the creature. The creature also gains the Trample Ability (U) against any normal sized target.
This Trait can be gained by Monsters with the Change Size ability, such as Konaki Jiji.

Monsters of staggering size (partial list)

• Gargantuan Reptillian
• Orochi