Thunder (Pichu)

Thunder is 's down special move in Super Smash Flash 2.

Overview
Pichu's Thunder looks and works virtually the same as 's own : Pichu generates a large lightning bolt with infinite range from the sky that comes falling directly towards Pichu's position. Opponents hit by the bolt are meteor smashed and dealt 2% electric damage with minimal knockback. The bolt stops after landing on a platform, but if it strikes Pichu, then Pichu will surge with electricity and deal two quick hits of 17% electric damage each (34% total) with massive knockback to opponents that make contact with it, but it will also deal 5% recoil damage to Pichu. The bolt will also continue to travel downward after striking Pichu, and if it strikes it in the air, then Pichu will rise slightly.

When performed with Discharge, in which Pichu has accumulated at least 50% damage, the bolt will not continue to travel after striking Pichu and it will only deal one hit of 17% electric damage. However, the bolt will also propel Pichu upwards slightly and send it into a tumble state, which Pichu can immediately cancel with almost any other action.

Origin
Thunder is a damage-dealing Electric-type attack that was introduced in the Generation I  games, Pokémon Red and Blue. The attack consists of the user summoning a bolt of lightning from the sky onto their opponent and is regarded as one of the strongest of all Electric-type moves in the series, albeit with low accuracy. Pichu cannot learn Thunder by leveling up (only its evolution, Pikachu, can) but it can learn it through a TM. Pokédex entries describe Pichu (who is a baby Pokémon) to be unskilled at storing electric charges and when it releases them, it usually shocks itself by accident in the process, an issue evidenced in all of Pichu's electric attacks in SSF2 that deal recoil damage. This problem is not seen in the core games but mainly on the Pokémon anime, where it is a recurring gag that Pichu usually ends up fainting due to its own electric attacks.