
Discovering Meloetta within the Indigo Disk DLC of Pokemon Scarlet and Violet introduces players to this iconic Normal- and Psychic-type Mythical Pocket Monster from the fifth generation. Meloetta appears in two distinct forms: Aria Forme and Pirouette Forme. However, in this particular DLC, you can exclusively encounter and capture the Aria Forme of Meloetta.
To initiate this encounter and add Meloetta to your collection, follow these steps:
Locating Meloetta in the Indigo Disk Pokemon Scarlet and Violet DLC:

Head to the Coastal Biome within the Indigo Disk DLC, specifically located northeast of Torchlit Labyrinth. Look for a dark patch of grass resembling an upside-down U on the map, indicating the area where Meloetta can be found.
Upon reaching the designated location, observe the presence of circulating air around your character. This mild whirlwind marks the spot where players need to stand to commence the summoning of Meloetta.
Capturing Meloetta in the Indigo Disk DLC in Pokemon Scarlet and Violet:

Once standing within the whirlwind, rotate your character clockwise for approximately 10 to 20 seconds. Despite appearing unconventional, this method has been tested and proven effective in encountering and capturing Meloetta.
After spinning, use the down button on the D-pad to activate the in-game camera and switch the filter to Sepia. While standing in the same spot, scan your surroundings through the Sepia filter. You should notice a relic song playing in the background, signifying a successful initiation of the process.
Exiting the camera mode, Meloetta will be visible in the environment. Engage in a battle with this Mythical Pocket Monster to capture it. Be cautious not to use overly powerful moves that might cause Meloetta to faint, preventing its capture in the Indigo Disk DLC of Pokemon Scarlet and Violet.
Regarding Shiny Meloetta in the Indigo Disk DLC:

Meloetta, like numerous other Pokemon, is subject to being shiny-locked within this DLC. Unfortunately, a shiny variant of this creature cannot be encountered or captured in the Scarlet and Violet DLC.