The move is an electrical variant of Pit's Upperdash Arm. The move has exactly the same effects and frame data as Pit's version, having super armor and able to deflect projectiles while active, along with suffering from great ending lag should Dark Pit use the move in midair (though just like Upperdash Arm, it does not put him into a helpless state like so). However, unlike the Upperdash Arm, the Electroshock Arm throws its target at a 30-40˚ angle instead of vertically. The Electroshock Arm also deals 1% more damage, and Dark Pit occasionally blurts "Electroshock!" if the move connects.
Although generally KOing later than Upperdash Arm due to its mainly diagonal knockback, the move can KO opponents much earlier near the sides of the stage as it sends opponents towards the side blast lines, starting at 50%. The move is hence best used against opponents who tend to stray near the edge a lot, and it can be worth the risk using the move offstage as an edgeguard to guarantee an early kill.
Special Move customization was added in Super Smash Bros. 4. These are the variations:
The Electroshock Arm is one of the Arm weapons introduced in Kid Icarus: Uprising. This weapon inflicts paralysis and has expanding charged shots. Unlike the Silver Bow and Dark Pit Staff, Dark Pit never uses this weapon in Uprising (unless the player equips it when controlling him).