Sally acorn. Illustrious checkpoints know the character already, should be good to go by just prompting "sally acorn". This was made so it's easier to get the general style of the character as seen in the cartoon.

Raise the strength to 1.4 and add (chibi:0.5) to get outputs closer to the canonical depiction, or just use whatever is in the showcase, as I often forget to update lora descriptions whenever I find something that works better

If you want to use this as an style lora, try 1.4 strength and the tag cartoon. Below are samples of other characters not present in the source material (post here):

best quality, masterpiece, solo, cartoon, amy rose, (chibi:0.3), full body, looking at viewer, white gloves

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best quality, masterpiece, solo, cartoon, rouge the bat, (chibi:0.3), full body, looking at viewer, white gloves

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best quality, masterpiece, solo, cartoon, male, 1boy, shadow the hedgehog, (chibi:0.3), full body, looking at viewer, hotdog, annoyed

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best quality, masterpiece, solo, cartoon, blaze the cat (chibi:0.3), full body, looking at viewer, white pants, tailcoat