Thunder (Pichu)

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

Overview
Pichu's Thunder looks and works virtually the same as Pikachu's: Pichu generates a large lightning bolt with infinite range from the sky that comes falling directly towards Pichu's position. The bolt crashes down upon entering in contact with Pichu, dealing massive knockback to anyone near Pichu and the bolt but also dealing 5% of recoil damage to Pichu. The attack will also be blocked by certain ceilings.

If used during Discharge (over 50% of damage), upon getting hit by the bolt, Pichu will be propelled slightly to the right while being sent upwards in a tumble state. Pichu can immediately cancel that state with any other move, including another Thunder, and performing multiple Thunders this way can effectively result in a self-destruct.

Origin
Thunder is an Electric-type attack that was introduced in the Generation I games, Pokémon Red and Blue. 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.