Pikachu (Ash)

Pikachu is the signature Pokémon of the Pokémon anime, and the first Pokémon that Ash obtained on his journey as a Pokémon Trainer, given to him by Professor Oak.

In the Heroes Coalition fics, this Pikachu is part of the Heroes Coalitions.

Appearance
Pikachu is a short, chubby rodent Pokémon. It is covered in yellow fur with two horizontal brown stripes on its back. It has a small mouth, long, pointed ears with black tips, brown eyes, and the two red circles on its cheeks contain pouches for electricity storage. It has short forearms with five fingers on each paw, and its feet each have three toes. At the base of its lightning bolt-shaped tail is a patch of brown fur.

Personality
After Ash gained Pikachu's loyalty in Pokémon - I Choose You!, Pikachu became extremely loyal to Ash and has maintained this loyalty, and while he is not always immediately trusting of strangers, he is generally friendly to humans and Pokémon alike. He acted as a guardian and big brother to Misty's Togepi, and has been seen mediating and even breaking up fights among other Pokémon, such as in Pikachu's Vacation. In Mewtwo Strikes Back, Pikachu, Meowth, and Meowth's clone were the only Pokémon not to participate in the giant battle; Pikachu stood motionless as his clone repeatedly slapped his face. Contrary to his distrusting nature, Pikachu took a liking to Misty very early in the series, and he has retained this liking of Misty throughout the series, such as when he was very happy to see her in The Scheme Team and Alola, Kanto!.

It was revealed that Pikachu also loves drinking orange juice, most likely because of its sourness in The Fires Of A Red-Hot Reunion.

During the Hoenn saga, Pikachu temporarily developed amnesia and sided with Team Rocket for a while. On several occasions, Pikachu has developed an "electric flu" causing him to become overcharged and extremely powerful. During these instances, Pikachu will sometimes accidentally let off electric outbursts which can be set off on anyone, including Ash. In all of these cases, Pikachu did not mean harm upon anyone.

As shown in a handful of episodes, the first being Showdown at Dark City, Pikachu has a special fondness for ketchup, but he will eat and enjoy almost any other human or Pokémon food. A running joke in the anime also seems to be Pikachu using Thunderbolt at the beginning of each series to destroy a female companion's bike or shock the companion herself. This has happened to Misty, May, Dawn, Iris, and Bonnie.

Pikachu, like his Trainer, is always happy to battle. He often tries his very best, but when he loses, he doesn't complain or feel bad about himself, especially when Ash reassures him. Ash and Pikachu are almost identical personality-wise, and thus are the perfect match for one another. Most others agree, with the exception of Burgundy, who in A Connoisseur's Revenge! said that Ash had a terrible relationship with all of his Pokémon, though this is more due to her inexperience in determining such relationships. Though rare, the two can still butt heads at times. When they first met, Pikachu would shock Ash with electricity out of vitriol. While being zapped by Pikachu still happens regularly for poor Ash, it's usually when he angers his buddy (such as when Ash rubs and pulls Pikachu's cheeks), or by accident (when Ash grabs Pikachu's tail by mistake).

In general, Pikachu as a species is not particularly powerful, but Ash's Pikachu is an anomaly, overcoming odds in battle numerous times. In Pokémon Emergency!, Meowth remarked that Pikachu's power "far exceeds its evolutionary level". In Showdown in Pewter City, he defeated Brock's Onix with an Electric-type attack that triggered the sprinkler system causing Onix to be drenched in water, one of its weaknesses. Ash's Pikachu has also defeated very powerful Pokémon that Ash's other Pokémon were unable to, such as Dragonite, Metagross and Mega Lucario. He was also the second of Ash's Pokémon to defeat a legendary Pokémon in battle, defeating Brandon's Regice to win the Brave Symbol. He later fought Tobias's Latios to a draw in the semi-finals of the Lily of the Valley Conference. He has helped Ash win countless battles and Gym and League matches.

The possibility of evolving into Raichu was first raised in the episode Electric Shock Showdown. After suffering a crushing defeat by Lt. Surge's Raichu, Nurse Joy presented Ash with a Thunder Stone. Ash allowed Pikachu to decide, but it smacked the stone away with his tail, choosing to become stronger as it is, and defeated Raichu using its superior speed. In the Sinnoh region, Pikachu battled a Raichu belonging to a trainer named Sho. The two were evenly matched, until Raichu used Hyper Beam to secure victory, a move Pikachu could not learn. At a Pokémon Center, Ash revealed that he kept the Thunder Stone he acquired in Vermilion City in case Pikachu changed his mind about evolving. Once again, Pikachu chose not to evolve, and defeated Sho's Raichu in a rematch with a combination of speed and spinning techniques learned from Dawn. In the interim, Team Rocket stole the Thunder Stone, as they also liked Pikachu to stay as he is.

However, at times, Pikachu has lived up to his species' frail and brittle strengths, particularly in Gym battles where he was defeated with relative ease by his opponent; for example, he was overpowered very easily by Lt. Surge's Raichu, Sabrina's Kadabra, Blaine's Magmar, Bugsy's Scyther, Whitney's Miltank, Chuck's Poliwrath, Roark's Rampardos, Fantina's Drifblim, Cress's Panpour, and Viola's Surskit, despite having a type advantage with Scyther, Poliwrath, Drifblim, Panpour, and Surskit. He also drew against Winona's Pelipper and Norman's Vigoroth, and struggled against Crasher Wake's Floatzel. Furthermore, he has lost twice to Trip's Serperior, as a Snivy in In the Shadow of Zekrom! and a Servine in A Rival Battle for Club Champ!, despite Trip being a starting Trainer and recently having obtained Serperior. In addition, Pikachu tends to struggle when his mobility is hindered, such as when the aforementioned Panpour weakened Volt Tackle with Mud Sport, or when his legs were numbed by Wulfric's Bergmite and its Icy Wind, preventing him from using Quick Attack.

Pikachu became the second non-legendary Pokémon to defeat a legendary Pokémon in the anime after Charizard, beating Brandon's Regice in Pace - The Final Frontier!, giving Ash his final Frontier Symbol.

Pikachu is also the only one of Ash's Pokémon to accompany him to the Hoenn, Unova, Kalos, and Alola regions, and was intended to be the only Pokémon to accompany him to Sinnoh before Aipom was discovered to have stowed away on the ship Ash was taking. Up until the capture of Dawn's Pachirisu, Pikachu was the only Electric-type Pokémon in the anime owned by a main character.

Pikachu is always becoming a constant target whenever he gets captured by Team Rocket. Sometimes, they succeed with nets, cages, capsules or different devices, but most of the time their plans always failed by Ash and his friends or something else. Whenever Pikachu gets released from their trap and reunites with Ash, he sends Team Rocket blasting off with his Electric attacks. Most of time in this case, his Thunderbolt. Sometimes, Pikachu sends them away even when he didn't get stolen. On other occasions, he battles them with Ash.

Even with his high level of electrical power, Pikachu has not stopped learning new attacks. Upon learning that Roxanne, the Rustboro Gym Leader used Rock types, Ash had Pikachu begin learning Iron Tail in All Things Bright and Beautifly!. After training hard, Pikachu finally perfected it in The Winner by a Nosepass, where he used it to defeat Roxanne's Nosepass and earn Ash his first Hoenn Badge. In addition to giving Pikachu an advantage over Rock types, Iron Tail has allowed Pikachu to defeat many powerful opponents. In May's Egg-Cellent Adventure, during a battle with Team Rocket, Ash ordered Pikachu to do a Quick Attack. Much to the surprise of Ash and his friends, the Quick Attack morphed into Volt Tackle which sent Team Rocket blasting off. Until Dancing With the Ducklett Trio!, it has been one of Pikachu's signature moves, in which Pikachu replaced it with Electro Ball, which it learned while battling a trio of annoying Ducklett. Not only that, Pikachu has used his Ability, Static, a few times in the anime.

Pikachu has demonstrated a great talent for mimicking Pokémon, altering the look of his physical features to match another Pokémon's appearance. He will occasionally use this talent to specify what Pokémon or person he is talking about. These imitation skills were notably put to use during the Pokémon Dress-Up Contest, where Pikachu was able to thrill the audience without the need for a costume or make-up.

Abilities
Pikachu charges itself while sleeping overnight, though stress and a lack of sleep can affect this. It is able to release electric discharges of varying intensity. Pikachu has been known to build up energy in its glands, and will need to discharge to avoid complications. It is also able to release energy through its tail, which acts as a grounding rod, as well as recharging fellow Pikachu with electric shocks. Pikachu can also electrify itself to use its signature move Volt Tackle.

Pikachu is the only known Pokémon capable of using the Z-Move Catastropika, while Pikachu in a cap has its own exclusive Z-Move, 10,000,000 Volt Thunderbolt. Partner Pikachu is the only Pokémon capable of using Zippy Zap, Floaty Fall, Splishy Splash, and the Partner Power, Pika Papow.

Trivia

 * Pikachu is Ash's only Electric-type Pokémon and was the only Electric-type owned by a main character in the anime until the capture of Pachirisu by Dawn.
 * For DP013, Professor Oak's Big Pokémon Encyclopedia is about Ash's Pikachu. He writes this Pokémon senryū about him: Partners Satoshi and Pikachu: a pleasant feeling.
 * Pikachu was the first of Ash's Pokémon to habitually disobey him. Other Pokémon that would do so, and are better remembered for their disobedience than Pikachu, are Primeape and Charizard.
 * Pikachu is the second Pokémon in the entire anime series to have managed to defeat a Legendary Pokémon, which he did by defeating Brandon's Regice in Pace - The Final Frontier!.
 * Pikachu is also the only Pokémon in the entire series that has been able to defeat two Legendary Pokémon, being able to take out Brandon's Regice in Pace - The Final Frontier! and Tobias's Latios in The Semi-Final Frontier!, although in the latter case, it was a draw, as Pikachu knocked himself out in the process.
 * In Where No Togepi Has Gone Before!, it was officially confirmed that Pikachu is male, as a female Togepi's Attract affected him. His physical appearance could not be used as proof, since gender differences were not implemented until after he had debuted in the anime.
 * Pikachu's gender had already been assumed male in the dub, where male pronouns such as "he" were used to refer to Pikachu. To a lesser extent, his gender was also previously implied in the Japanese versions, specifically in Island of the Giant Pokémon (where he used masculine pronouns), Princess vs. Princess (Pikachu was shown when the narrator said that males had to carry packages), and in The Battle of the Badge, where Brock referred to Ash and Pikachu as being "those guys" when touched by their loyalty.
 * The first time Pikachu's gender difference was pointed out was in Beauties Battling for Pride and Prestige!, where Pikachu was disguised as a female by sticking a heart-shaped piece of paper on his tail.


 * Pikachu is the only Pokémon of Ash's to be used in every Gym battle in a region.
 * In Latin America, Cartoon Network has a "Biografía Toon" (Toon Biography) segment, which consists of biographies and histories of cartoon characters. This segment has done a two-part feature on Ash's Pikachu. According to the segment, Pikachu is the result of an experiment conducted by Professor Oak and allegedly destroyed the lab where he was created in a momentary loss of control.
 * An Elite Coverup! has been the only time when Ash does not use Pikachu against an Elite Four member.
 * Pikachu is the first evolved Pokémon Ash obtained, although at the time Ash obtained Pikachu, he did not yet have a pre-evolved form.
 * Pikachu is Ash's only Pokémon capable of evolving by use of an evolutionary stone, not counting Snorunt who could not evolve through use of an evolution stone at the time of its capture and normal evolution.
 * Pikachu is the first Pokémon in the anime to defeat a Mega Evolved Pokémon without Mega Evolving, defeating Korrina's Mega Lucario in Showdown at the Shalour Gym!.
 * As Pikachu hates being in his Poké Ball, it is rarely ever seen, with a known total of only six confirmed appearances throughout the whole series (flashbacks not included). These being in Pokémon - I Choose You!, Showdown in Pewter City, Snow Way Out!, A Corphish Out of Water!, Breaking Titles at the Chateau!, and A Frenzied Factory Fiasco!.