Volt Tackle

Volt Tackle (ボルテッカ, Volttekkā) is Pikachu's Final Smash in Super Smash Flash 2. Pikachu transforms into a ball of electricity and flies around the stage. During this time, anyone who comes into contact with Pikachu takes heavy damage and is sent flying.

Origin
In Pokémon Emerald, the Volt Tackle is introduced, but obtaining it is a fairly arduous process. The Pokémon Trainer must first obtain a female Pikachu and a Pokémon of the same egg group (so they can breed), or alternately, a Pikachu of either gender and a Ditto, or two Pikachu of opposite genders. Furthermore, the Pokémon Trainer must also obtain a Light Ball. (The Light Ball is a rare item; there is a 5% chance of a wild Pikachu carrying one.) The Light ball must be given to Pikachu (or one of the Pikachu) followed by putting it and its breeding partner in the day care. When the Pokémon trainer comes back to the day care later on, the two Pokémon will have produced an egg. (Depending on the combination of Pokémon, there is a higher/lower chance of this happening sooner or later. After traveling for a certain amount of time, the egg will hatch. If the correct conditions were set up in the day care, it will be a Pichu that knows Volt Tackle. This Pichu can then be leveled and further evolved into a Pikachu (followed by a Raichu if one so chooses) so that Pkachu or Raichu has Volt Tackle. Since Volt Tackle is exclusive to the Pichu/Pikachu/Raichu evolutionary line, it has become their signature attack. As a move, Volt Tackle is very powerful and is 100% accurate. However, Volt Tackle causes recoil damage to its user. This recoil damage is equivalent to one third of the damage caused to the target bu Volt Tackle. Its description in Pokémon Diamond and Pearl reads:
 * The user electrifies itself then charges at the foe. it causes considerable damage to the user as well.

In Super Smash Bros. Brawl, Pikachu uses Volt Tackle for his Final Smash. Volt Tackle is also very powerful in that game, but can be somewhat difficult to control, so the 100% accuracy was not translated into Brawl. Furthermore, Pikachu is not damaged by Volt Tackle, so the recoil damage was not translated into Brawl either.

In the Tekkaman Blade anime (based on the 1975 Tekkaman the Space Knight anime), the main character, Takaya Aiba (or D-Boy) helps protect the Earth from an alien invasion. When he is fighting an evemy, he sometimes uses his signature attack: Vol Tekka (Tekno-Bolt).

In Pulseman, a game released for the Mega Drive by Game Freak only in Japan, the main character Pulseman somewhat resembled D-Boy and has an attack called Voltteccer [sic]. In this attack, Pulseman can gather up an electric current, change into a ball of electricity, shoot through the air, and ricochet across the stage. It damages or destroys any enemies that it comes into contact with. The name Voltteccer is most likely a reference to the Tekkaman series' D-Boy's signature attack, Vol Tekka. (The -ccer in the name is most likely an incorrect spelling of how the attack is pronounced.) In the Japanese version of the Pokémon series, Volt Tackle is referred to as ボルテッカ-, which is romanized as boruttekkā and interpreted as Voltekkā. This "Voltekkā" move is most likely a reference to Pulseman's Volteccer [sic] which originally referenced D-Boy's Vol Tekka attack in name. In the Japanese version of Super Smash Bros. Brawl, Pikachu's Final Smash is also referred to as Voltekkā, to reflect the Japanese Pokémon name of the move.

Since both the Pokémon series and Pulseman were developed by Game Freak, this only increases the chance that the Voltekka move in the Pokémon series is a reference to Pulseman. Furthermore, other references to Pulseman have appeared in the Pokémon series (including Ledian, S.S. Anne* [Saint Anne**], Team Galactic* [Galaxy Gang**], Xatu, etc.) 75

It is also worth noting that the pronunciation of Vol Tekka/Voltekkā is the same in both the Tekkaman series and in the Pokémon Anime.
 * "Farewell, Tekkaman Dagger. VOL... TEKKAAAAAAA!" (Tekkaman Blade Anime)
 * "Pikachu, Voltekkā!" (Pokémon Anime)

This creates the possibility that Voltekkā is a direct reference to D-Boy's Vol Tekka in name, skipping Pulseman.

Many of Game Freak's staff members who worked on Pulseman also worked on the Pokémon series, so it is entirely possible that the Tekkaman anime series is one of a staff member's favorites, which in turn caused the reference to appear in both games.

In any case, Pikachu performs Volt Tackle in almost the exact same way that Pulseman uses his Voltteccer [sic] attack. When the attack is performed, it is possible to control the initial direction in which Pulseman flies, though it is impossible to control it after that point other than cancelling the attack or waiting for it to stop. When Pikachu uses Volt Tackle (Voltekkā), it looks very similar to Pulseman's Voltteccer [sic] attack. It is also difficult to control the way Pikachu flies, but not directly, which is also similar to Voltteccer in its difficulty to control. The way that Pikachu's Final Smash looks and the difficulty in control (despite Volt Tackle [Voltekkā] originally being 100% accurate) further pushes the idea that Volt Tackle (Voltekkā) is a reference to Pulseman's Voltteccer [sic] attack.

On a side note, when Pokémon Emerald was being produced, it is possible that Voltekkā was translated as Volt Tackle for a few reasons. The first is that the localizers were unaware of the reference(s), especially considering that Pulseman was a Japanese-exclusive game at the time. The second is that since Voltekkā is an electric-type attack, it is clear why ne would assume the first part of the word is "volt", but what about the "ekkā"? When putting "volt" and "ekkā" together, the closest sounding name for an electric-type move that makes sense, given the move's description, would be "Volt Tackle". After all, it's not uncommon for Western-language words that end in an "L"-sound to end with an extended "A"-sound when written in Japanese katakana. All things considered, it is perfectly understandable why Voltekkā was translated as Volt Tackle.