Ralts is a humanoid Pokémon with a white body. It has thin arms and legs that widen toward the feet. There is a wispy extension trailing off the back of its feet, creating the overall impression of a nightgown or oversized dress. Most of its face is covered by green hair that resembles a bowl cut, but a pair of pinkish-red eyes is sometimes visible. There are two flat, red horns on top of its head: a large one toward the front and a smaller one at the back.
Ralts uses the horns to read people and Pokémon's emotions. Warm feelings cause its body to warm as well, but it hides if it senses hostility. If its Trainer is in a cheerful mood, Ralts also becomes cheerful and joyous. It is known to inhabit urban areas, but it does not normally show itself to humans. However, when it senses happy feelings, it will approach people. Ralts prefers to hang out with people of cheerful nature more than those with gloomy natures. Regardless, Ralts will show no discrimination to anyone based on age or gender. In Generation IX, Teleport is its signature move.
Ralts debuted in Do I Hear a Ralts?. Max found it while it was very sick and decided to prove his abilities by taking responsibility for it. With the help of Snorunt, he rushed it to the nearest Pokémon Center. He later promised to return for Ralts when he became eligible to be a Trainer.
Ralts, the Feeling Pokémon. Ralts is the pre-evolved form of Kirlia. It can use the horns on its head to read human emotions. Ralts rarely shows itself to humans, but may occasionally approach when it senses positive or happy feelings.
Ralts seems to be based on a young child and the concept of empathy. It is common in various forms of media for shy, sensitive characters to be depicted with hair obscuring their eyes, which may explain Ralts's bowl cut hairstyle. The shape of its legs resemble a long dress, and the red horns on its head resemble two halves of a heart, which may relate to its ability to sense emotions.
Ralts may be a partial anagram of astral (relating to its Psychic powers). It may also involve waltz (referring to its dancer-like evolved forms).