Thunder (Pikachu)

Thunder is a recurring attack in the Pokémon games which is usable by Pikachu in the Super Smash Flash series.

Overview
Thunder is effects is pretty much self-explanatory: Pikachu generates a large lightning bolt with infinite range from the sky that comes falling directly towards Pikachu's position.

In the original Super Smash Flash, Thunder is both 's down attack and. The bolt comes down and passes through Pikachu, continuing moving way beyond the floor. When used on the ground, it deals a set of 9% of damage per frame and heavily launches opponents on contact. If Thunder is initiated in the air, Pikachu becomes an actual hitbox while both Pikachu and the bolt deal 4% with less knockback, which means Pikachu can deal damage by itself even before the bolt comes down; the aerial version can also be held indefinitely with the attack key, without needing to pick an item as the ground version requires.

For the reboot, Super Smash Flash 2, Thunder has become 's down special move and has been upgraded to match its official counterpart from the SUper Smash Bros. series, amalgamating several attributes from the latter. The bolt now crashes down upon entering in contact with Pikachu, rather than passing through it as it does in SSF, dealing massive knockback to anyone near Pikachu and the bolt, the attack will also be blocked by certain ceilings. Pikachu is given horizontal mobility (if in the air) during the animation of the attack. The bolt meteor smashes.

Origin
Thunder is an Electric-type attack that was introduced in the Generation I games, Pokémon Red and Blue, regarded as the strongest of all Electric-type moves in the series. Pikachu can learn Thunder at rather high levels, between 41-58, depending on the game. The power of Thunder is evidenced by the damage and knockback is is able to deal in the SSF games.