The Fluff:
Bounce is a very easy-going lady. She loves to laugh and be silly, she enjoys a carefree existence, so she would prefer a Song with a similar mentality. Stallions with "difficult" mares might have a hard time convincing her to join them. She is also very fluffy, and needs a Song that lives in a climate where she can be comfortable.
The Fierce:
Nemesis is... hard to classify. She is definitely not the easiest girl to get along with. Somewhat snappish and stand-offish, she will need to be coaxed into a Song. She is very independent, and does not like to rely on anyone but herself.
Prospective Stallions for either may reply here or via PM.
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And also now introducing the newest lady of the bunch,
The lovely Lilac! She is brand new enough that I really haven't gotten to know her yet, but I think beneath that sweet exterior lies a wicked sense of humor. She is definitely one to watch out for, and I think she'd like a stallion that can keep up with her, in a battle of wits or a flight of fancy.