Basically accessories, but for Battle Sprites.

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In the supply depot (and certain prize boxes, auction house, etc.), we could buy Sprite accessories, and add them onto our battle sprites - Almost exactly the same as with Bechamel, except there would be a new NPC in the Lab to add the Sprite accessories instead.

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Certain Battle Sprites wouldn't be able to use certain accessories. The accessory appearances would be changed to fit the sprite themes. There would be a preview screen before attaching so players will know what their accessories will look like for their Sprites. Some accessories would also prevent attaching certain other accessories until removed.

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Instead of instantly gaining these accessories when Sprites unlock their ultimates, you would have accessory tickets added to your arsenal for your Sprite.

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Accessory list (W.I.P.):

Wings - Can be used by: Drakon, Maskeraith.

Beard - Can be used by: Drakon, Seraphynx (all), Maskeraith (Snarblepup), Maskeraith (Punkin).

Longer Horns - Can be used by: Drakon, Maskeraith, Maskeraith (Snarblepup), Maskeraith (Punkin).

Neck Spikes - Can be used by: Drakon, Maskeraith (Snarblepup), Maskeraith (Punkin).

Nose Horn - Can be used by: Drakon, Maskeraith, Maskeraith (Snarblepup), Maskeraith (Spiralhorn).

Larger Claws - Can be used by: Drakon, Drakon (Gun Pup), Seraphynx (all), Maskeraith, Maskeraith (Punkin).

Roarmulus Head - Can be used by: Drakon (Gun Pup).

Bolted Jaw - Can be used by: Drakon (Gun Pup).

Rocket Head - Can be used by: Drakon (Gun Pup).

Red Jaw - Can be used by: Drakon (Gun Pup).

Vents - Can be used by: Drakon (Gun Pup).

The Divine/Shadow Drakons can and can't use the same accessories as normal Drakons and aren't listed as separate Sprites.
The Tabby/Siamese Seraphynxes can and can't use the same accessories as normal Seraphynxes and aren't listed as separate Sprites.
The Volcanic/Freeze Maskeraiths can and can't use the same accessories as normal Maskeraiths and aren't listed as separate Sprites.