Its name is a combination of the words victory or victorious and teeny or tiny.
Victini is a small cream-colored rabbit-like Pokémon with round bright blue eyes, long pointed flame-orange V-shaped ears, and small orange paws and feet. The front of Victini's ears are orange, while the interior of its ears are cream colored and black. It has little orange hands with three claw-like digits; Victini often forms the "V" for "Victory" sign with its hands. Its orange feet are small and it possesses two claw-like toes. It has small, cream-colored wings on its back which allow it to fly; however, Victini will often levitate using its psychic powers. It has two pointed fangs which can be seen on its upper jaw when it opens its mouth.
In the anime series
Victini has a major role in the movies Pokemon the movie:Black - Victini and Reshiram as well as Pokemon the Movie: White - Victini and Zekrom. In Japan, Victini with the moves Fusion Flare, Fusion Bolt, Searing Shot, and V-Create were given out to promote the new movies. It was shown that Victini was fond of Macarons that Cilan had made. The group used these to lure Victini out of being invisible to show they meant no harm and that Victini shouldn't be scared.
In the manga
Victini was the cause of a war 200 years ago because thousands of people wanted victory.
In the round "At Liberty on Liberty Garden", Black and White arrived on Liberty Garden after Professor Juniper sent Black to gather Pokedex data about Victini. In truth, it is revealed that Team Plasma has been chasing Victini for three days, intending to shelter it. Black defeats Team Plasma and saves Victini. He gathers data and sends it to Prof. Juniper.
Victini is one of three Pokémon with its type combination. However, Victini is a Psychic/Fire type, making its main type Psychic. Zen Mode Darmanitan and Delphox are Fire/Psychic making their main type Fire.
Despite it being a Fire type, there are no flames located anywhere on Victini. However, it has been seen that when Victini uses V-create, its V-shaped "ears" start burning.
Victini's name is a portmanteau of "victory" and also "tiny". Its stance resembles the victory pose. This could also be a reference to the Generation it was introduced in, Generation V.
Victini's appearance seems to be based on うさぎリンゴ usagi-ringo, a method of cutting apple slices to make them look similar to rabbits.
The concept of this Pokemon may draw inspiration from Nike, the Greek winged goddess of victory.
Victini was designed by Mana Ibe and was meant to appeal more to girls than to boys.
Victini's "tails" can move like wings.
In the national Pokédex, Victini's official number is 494, the first Pokémon after Arceus. This makes it the first Pokémon from a regional Pokédex before a Starter Pokémon. This is due to the fact it was going to be in Generation IV but for some reason got held back and placed into Generation V without its Pokédex number changing.
Victini's shiny form isn't obtainable without cheating.
The Movie 14 Victini appears in the special home; if players bring the WIFI Zekrom (Black) or WIFI Reshiram (White) to said home in the Dream World, Victini appears to both the player and Zekrom/Reshiram. In the minigame that follows, Victini attempts to destroy the force field, but its attack is useless against the force field and nothing can't be done, leaving only the player and Zekrom/Reshiram to destroy the force field. The player must call Zekrom/Reshiram for help on the energy balls by powering up Zekrom's/Reshiram's power. Then, after a few hits, the force field is down to one energy ball. However, if the player is able to charge Zekrom's/Reshiram's power to maximum, then Zekrom/Reshiram will charge up its tail and use an electrical/flame attack to not only destroy the final energy ball, but the force is to great for the force field, causing the force field to blow up. Afterwards, Victini happily gives the player access to the Hero Zekrom/Reshiram C-Gear skin promotion in the Global Link.
If one uses an Action Replay to get a Liberty Pass, it will be disfunctional.
In PokePark 2: Wonders Beyond, a Victini in the game was referred to as a "he". This was probably an oversight by Nintendo, as the concept of Victini was likely based on Nike, the winged Greek goddess of victory, and was meant to appeal more to girls. Victini is generally dainty and feminine in appearance.