As a Pokémon expert, I'm here to clarify the transformation process of Meloetta. Meloetta is a unique Pokémon with the ability to shift between two forms: Aria Forme and Pirouette Forme. The transformation is not a physical change that occurs through an item or an external trigger like other transforming Pokémon. Instead, Meloetta's transformation is an intrinsic ability that it can activate at will.

Here's the step-by-step process for Meloetta's transformation:

1. Meloetta is born in its Aria Forme, which is its default state.
2. When Meloetta needs to transform, it performs a special move called Relic Song.
3. After performing Relic Song, Meloetta changes into its Pirouette Forme.
4. To revert to its Aria Forme, Meloetta must use Relic Song again.

It's important to note that Meloetta's transformation is not a permanent change and can be reversed by using the move Relic Song again. This ability is unique to Meloetta and is not shared with any other Pokémon.

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Aria Forme is Normal/Psychic. Pirouette Forme is Normal/Fighting. Normally, it is in Aria Forme, which is the only form it can take outside of battle. If Meloetta uses the move Relic Song in battle, it changes between the two forms.read more >>