Ninja Armour

Info
Pieces of Ninja armour are a low-tier drops from King Slime. They are Pre-Hardmode, and available on all platforms (though in the 3DS version it is a vanity item). It has nine defense, which puts it just above tin armour, and just below Iron armour. It has increased movement speed as a set bonus for wearing all pieces of armour (In the 3DS version of Terraria, the set bonus is a blurred movement effect)

The Ninja armour is hard to obtain, as you will have to kill King Slime a minimum of three times. And yet, it is not a very helpful piece of equipment, it has only nine defense, which is easily beaten by a simple set of Lead armour, and the movement speed increase can be beaten by simply exploring the jungle for 10 minutes and recovering some Hermes Boots. Also, it has a very low rarity tier, and it sells for pennies. Ninja armour is not very practical, though it does look good in a vanity slot.