Tailed Beast Chakra Arms

Red Chakra Arms, known officially as Tailed Beast Chakra Arms, is Kyūbi Naruto's down special move in Super Smash Flash 2.

Overview
When performed, Kyūbi Naruto transforms into his four-tailed form and slams his hands into the ground, causing giant arms to pop up from underground, with one on each side of him. The arms can hit opponents up to three times and deal 15% flame damage per hit, for a total of 45% damage if all hits connect, as well as strong knockback. An additional 15% flame damage can also be dealt to opponents hit by Kyūbi Naruto's hands as they're slammed into the ground.

Kyūbi Naruto cannot use the move in midair. Also, the move has a lot of startup and ending lag, making him more susceptible to being punished for using the move. However, punishing it is still fairly difficult, due to the massive size of the arms and the fact that Kyūbi Naruto is granted knockback resistance when using it.

Origin
Tailed Beast Chakra Arms is an ability in the Naruto franchise that a Jinchūriki, such as Naruto, is able to perform when in a tailed beast form. The Jinchūriki will use the raw chakra of the their Tailed Beast to form arms, which they can freely manipulate to attack their foes, able to strike an opponent before it can react to it.

The chakra arms' hands are clawed while the rest of the arm seems to lack any kind of joint, thus allowing them to have flexible movements that will generally be impossible for normal arms. The user can create any number of arms that they desire and they can also serve other purposes, such as to grab onto objects or enemies from great distances. Merely touching one of the arms can cause fatal burns, due to the Nine-Tails' seething hatred within its chakra (though this is not always the case). Due to having chakra attached to his body, the chakra arms can grow in size and from the fourth tail up, Naruto, the arms, or any part of his body can divide into two or more fully operational appendages.