Pokemon Trainers Arena is a fighting game that pits Pokemon trainers against each other, with little to no help from their Pokemon. The idea was spurred after one idea that Pokken developers had where the trainers would fight instead of Pokemon. "We first had the idea of having around 20 pokemon trainers fight each other in the game but that idea was thrown out after 2 seconds."
As with many fighting games, players choose a character from a lineup and engage in hand-to-hand combat with an opponent. Traditional fighting games are usually played with buttons which correspond to the strength of the attack, such as strong punch or weak kick. Characters can preform standard or special moves; special moves are attacks mostly exclusive to them.
A meter builds up on the bottom of the screen; once this meter is full, the player can summon a Pokemon Striker, which will do a couple attacks that are very powerful and then leave. The more energy the meter has, the longer the Pokemon will attack.
The trailer opens with Pikachu outstretched onto the ground, staring at the sky, which the clouds part to uncover a title that says "Pokemon Battle Arena". Suddenly, he's put back into his Pokeball, as Red slides across the ground with his opponent: Giovanni. Giovanni sends out some Team Rocket goons out to attack Red, but then something flies across the sky... Genesect! On top Genesect is Touko, who lands with grace and puts Genesect back into her Pokeball. You are really confused at this point. Why do the trainers keep putting the Pokemon away?
Red rams into Giovanni with his bike, blasting away his Team Rocket goons. Touko sends out Genesect to do a final attack. It's super effective! Just then, Sabrina floats away from the shadows of the woods nearby, deeming Red and Touko worthy opponents. We look at the sky as the logo changes to "Pokemon Trainers Arena". The trailer ends.
Red is introduced as a curious 11-year-old boy from Pallet Town. In the instruction manuals of Pokémon Red, Green, and Blue Versions, it is revealed that Red gained an interest in Pokémon after his best friend, Blue, stopped playing with him and became a bully. His adventure begins one day when Professor Oak calls the two to his lab for a starter Pokémon. He fights using a bike, a fishing rod, and repel spray.
Hilda is a girl who lives in Nuvema Town, along with her childhood friends, Cheren and Bianca. She received a starter Pokémon and a Pokédex from Professor Juniper. As well as encountering and battling her childhood friends at various points during her journey, Hilda will met a man known as N, who wishes to create separate worlds for humans and Pokémon. In order to achieve his goals, he and Hilda battled several times during the course of the game. Hilda will also battled Team Plasma at various stages of her journey. In this game, she attacks with a Magmarizer (which shoots out powerful flames), Poison Barbs, and a chain.
In the first games Giovanni appeared in, he served a dual role: one that was well-known to the residents of Kanto, and one that was more secret. He was first shown as the leader of the villainous Team Rocket, the first of many criminal organizations to grace the Pokémon games. After he and his team of Grunts were defeated at Silph Co. by an eleven-year-old boy, Giovanni fled to a hideout that his antagonist was unaware of. Once the player returned to Viridian City, one of the major plot twists of these games revealed that Giovanni, in addition to his role as a criminal, was the final Gym Leader to be fought before the Elite Four—albeit one without a formal title. He attacks using ground moves and sending out Team Rocket members to fight alongside him.
Sabrina has appeared in every generation of Pokémon other than Generation V and Generation VI as the Gym Leader of the Saffron Gym. Known as "The Mistress of Psychic-type Pokémon", she has had psychic powers ever since she was a child, when she accidentally bent a spoon. She apparently dislikes battling, but is hard to beat because she can communicate with her Pokémon telepathically. Her fame has grown so much that even Trainers living in the Sevii Islands have heard of her. Previously there were two Gyms in Saffron City, a Fighting-type Gym, and a Psychic-type Gym. Sabrina used her advantage to defeat the rival Gym and strip them of their Gym status. She appears to have the ability to see the future. In Pokémon Gold, Silver, and Crystal she states that three years ago she foresaw the arrival of another strong challenger (realized in the form of Ethan, Kris, and Lyra). After this second defeat, she accepts that the ability of foresight may be limited. She attacks using telepathic powers (by throwing things like tiles, bottles, and china plates) and the ability to see in the future to dodge attacks.
In Pokémon Black and White, Alder appears as the wandering Champion of Unova. The player first meets him on Route 5, where he is seen with Cheren. The two are discussing Cheren's ambitions and goals as a Trainer—at this point, Cheren is aiming to be the Champion of Unova. Alder appears at several points in the game to help the player put a stop to the plans of Team Plasma, making appearances at Relic Castle and N's Castle.
In the past, Alder's starter Pokémon died of illness, and in despair over not being able to save it, he began traveling around aimlessly. Before his partner's death, the two of them madly pursued strength, much like Cheren did. The Pokémon's death changed Alder's outlook on life. The identity of this Pokémon is never mentioned in Black and White, but dialogue in Pokémon Black and White 2 reveals that Alder's late partner was Larvesta/Volcarona. He attacks via smoke bombs and wind, which can push the opponent towards him or away from him, which will be handy for combos.
Unlike the most of Exotoro's games, there are only five unlockable characters.
There are a total of five amiibo characters that are unlocked. These characters were added six months after the game came out and were not found on the disc data.
Elisabeth is the last known remaining Blanctorche, a family of nobles in France who supposedly protect the innocent. She is a childhood friend of Ash Crimson and they were raised in the same mansion together. She used to act as his older sister figure, until a fire burned down the mansion and many of her clansmen to the ground. As the sole Blanctorche, she lives with her butler, Jacques, near the remains of her family's home. She is a very serious and strict high class member of nobility. Once she has decided to do something, she'll do whatever it takes to get it done. Perhaps due to her upbringing, she doesn't find it urgent to always keep her promised meetings with her teammates of lower stature. Though she is the one who invites them to her dwelling, she arrives tardy and usually denounces them within a few moments of their conversation. Elisabeth attacks with a short ranged riding crop. She also uses magical light powers to trick and trap others. Her fighting style is very similar to the France martial art of Savate.
Leah Needlenam is a crazed doctor who only cares for her well being and X-Ray's. She will do anything if it benefits her or X-ray, not caring who else benefits or is harmed from it. She runs a hospital for an unknown purpose, although she seems to collect a ton of organs. When interacting with others, she is calm and collected unless suddenly threatened, in which she turns to panic. She can be very quirky at times. She rarely makes death threats, although does subtly hint at fates she has in mind for people she doesn't like. She attacks by throwing needles and attacking with medical equipment, as well as pulling out a gun.