Knuckles the Echidna
Knuckles the Echidna (ナックルズ・ザ・エキドゥナ, Knuckles the Echidna) is a character from the Sonic series.
Knuckles first appeared in Sonic the Hedgehog 3 and is one of the main characters of the Sonic the Hedgehog series. He was tricked by Dr. Eggman into thinking that Sonic was evil and was trying to steal the Master Emerald. Since being tricked, he did all he possibly could to slow Sonic's journey down. Since then he has realized that Sonic was the ally, and they have become friends. Knuckles' most recurring personality flaw is his immense gullibility, having been tricked by Eggman more than once to collect the Chaos Emeralds under a hidden agenda, which sparked numerous fights between him and his ally Sonic, only for the former to realize too late he has been fooled. In recent games, this flaw seems to have disappeared altogether. Knuckles is aptly named for both his spiked gloves and immense physical power in his fist, only rivaled by Sonic's supersonic speed. Knuckles lives on Angel Island, and he is constantly tasked with guarding an ancient and powerful jewel known as the Master Emerald, which is said to be able to control the power of all seven Chaos Emeralds.
In Ultimate, Knuckles has three abilities as an Assist Trophy: digging into the ground like a drill and then upper cutting back up, and using the Homing Attack. Knuckles's ability to dig into surfaces first originated in Sonic Adventure and Sonic Adventure 2; however, in both games he could only dig if he had the Level Up Item Shovel Claw. He could also dig into the ground and then uppercut in Sonic Battle. It was not until Sonic Generations that he could dig without the Shovel Claw. Knuckles's other ability is the Homing Attack, which also made its debut in Sonic Adventure as a move only Sonic could perform. Knuckles was first able to use it in Sonic Heroes, though he could only perform it when following Sonic. He could first use it on his own in Sonic Advance 3. His third ability is simply punching the opponent with his fists. Knuckles is often associated with punching in many Sonic games and often has the ability to punch enemies as a part of his moveset in his playable appearances in Sonic games, more specifically the previously mentioned Sonic Adventure and Sonic Adventure 2 as well as in Sonic the Hedgehog (2006). He is also seen punching in his idle animation in Sonic Blast, Sonic Mania and Sonic Mania Plus. His punch-punch-uppercut combo closely resembles a combo he could perform in Sonic the Fighters
Knuckles, like Tails and Silver the Hedgehog, appears running through the shuttle loop in the background of Green Hill Zone. Just like many other characters in the Sonic series, Knuckles appears as a Sticker that Sonic can use and a Trophy in the game.
A powerful red echidna also known by his full name, Knuckles the Echidna. Knuckles resides on Angel Island, where he guards the Master Emerald. Both friend and rival of Sonic, Knuckles is a martial-arts expert who can glide through the air.
Knuckles appears in Ultimate as an Assist Trophy. He attacks opponents with Homing Attack, and also digs into the ground and then uses an uppercut to attack. He may also simply punch opponents with his fists.
He also once again appears as a background element of Green Hill Zone. When playing on the stage, his assist trophy will not appear.
Knuckles is voiced by Travis Willingham, though like Sonic and Shadow, it is via recycled voice clips from other Sonic games.
As a costume
Knuckles also appears as a summonable primary Spirit. He can be summoned with the spirit cores of Muddy Mole (a character who digs through the ground like Knuckles) and Gordo (a character with spikes like Knuckles' fists).
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