Thunder Jolt following the platform it lands on in Brawl.
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Thunder Jolt (でんげき Shock) is Pikachu and Pichu's neutral special move. Upon use, the user drops a sphere of electricity diagonally downwards, which can deal medium damage as it falls. If it lands on a surface, it turns into an arcing wave of electricity that hops along the terrain's surface and deals slightly less damage. The projectile will wrap around corners and snake along walls and even ceilings if the corners are not too sharp and it lives long enough; it cannot wrap around the underside of soft platforms due to there being no ceiling to latch onto. When the move is used on the ground, it essentially turns into the wave form immediately.
Like its other specials and electrically charged attacks, Thunder Jolt damages Pichu upon use, inflicting 1% damage each time.
Unlike most other attacks Pokémon use in the Super Smash Bros. games, there has never been an attack named Thunder Jolt in any of the Pokémon RPGs. Thunder Jolt was, however, present on the original Pikachu card as one of the many moves invented for the Pokémon Trading Card Game (TCG). The name of the move in the Smash Bros. games likely arose either from the popularity of the trading cards at the time of SSB or from a mistranslation of "Thunderbolt", the name of a move Pikachu is known to use in the mainstream games and the anime.
Use this ground-hugging projectile attack while standing or jumping.
 Description from the Brawl Instruction Booklet
Release a jolt of electricity that moves forwards by bouncing along the ground. Also usable in midair.
Thunder Jolt in Melee.
- The version of the move in SSB has a hitbox that does not match with its appearance - it tightly hugs the ground as the visual effect bounces over it. This may have been designed to stop characters such as Kirby from crouching under it, as Melee reworks the attack to have a hitbox in the expected place as well as one under the arch to hit crouchers - though Brawl deletes this coverage hitbox.