Enma (5e Creature)
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Enma, the Monkey King
Medium beast, lawful good
Chakra. Enma has 30 chakra points which he can expend. All chakra points are regained at the end of a long rest.
Endurance. When Enma is targeted by an effect that allows him to make a Constitution saving throw to take half damage on a success, he takes no damage on a success and half damage on a failure.
Multiattack. Enma can make 2 unarmed strikes.
Unarmed Strike. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 8 (2d4 + 3) magical bludgeoning damage.
Adamantine Prison Wall (5 Chakra). Enma becomes a Gargantuan cage. His AC doubles, he takes half as much damage from all sources, creatures may walk within him without a movement penalty and have half cover, and creatures larger than Small can not move into or out of his space.
Adamantine Staff (5 Chakra). Enma becomes a two-handed, reach, heavy martial melee weapon that deals 3d6 + the wielder's Strength modifier magical bludgeoning damage. If a creature summoned Enma, they automatically have proficiency in this weapon. Enma may end this effect as an action.
A personal summon and close friend of the Third Hokage, Enma is a powerful ally for any shinobi. While his exact location of origin is unknown, it is possible that he is part of a unique group of Sage creature, as while he himself has not shown any Sage abilities, his transforming abilities closely resemble the uniqueness of other Sage creatures' techniques.