Shovel Claw

The Shovel Claws (シャベル クラウ) are an upgrade for Knuckles the Echidna. They first appeared in Sonic Adventure and Sonic Adventure DX, and later returned in the sequels Sonic Adventure 2 and Sonic Adventure 2: Battle.

Description
The Shovel Claws are a pair of hooked metal plates with spiked claws that can be attached over the tops of Knuckles' gloves. They are specifically made to enhance Knuckles' digging abilities, allowing him to use Dig. They are the equivalent to Rouge the Bat's Pick Nails.

Sonic Adventure
In Sonic Adventure, the Shovel Claws are located in the Mystic Ruins' Adventure Field. They are found in a small cave behind Tails' workshop in Mystic Ruins, inside one of the smaller cavers with a Kiki Badnik, close to the Mine Cart that takes players to the Mystic Ruins' Chao Garden. After getting trapped inside the room with the Shovel Claws by a cage door activated by a Kiki, Knuckles has to use the Shovel Claws to find a hidden contact to break free. It is a later requirement to find the Master Emerald shards in certain levels.

Sonic Adventure 2
In Sonic Adventure 2, Knuckles finds them in Pumpkin Hill, on a platform just in front of the starting point of the level. They are the only mandatory upgrade for Knuckles here, as at least one of the Emerald Shards in the level will be hidden underground, requiring the upgrade to get to it.

Sonic X
The Shovel Claws appeared several times in Sonic X. In this media they originate from Knuckles the Echidna's home world, until they were transported to Earth under unknown circumstances. Knuckles mainly uses them to dig, and in rare cases, as an offensive weapon.

They first appeared in "The Adventures of Knuckles and Hawk" where they had come into the possession of Hawk, a human friend of Knuckles, who had found them inside an old temple on the southern part of a continent. Knuckles eventually took possession of them after he found them inside Hawk's house and used them to dig up a buried Chaos Emerald.

The Shovel Claws later reappeared when Knuckles and Sonic where fighting Chaos 6, and Knuckles used them to bare Chaos' brain for Sonic's attack. He later used them to attack Team Chaotix when they drew pictures on him.