Mandy

Mandy was seen in 2015 and was also short-lived. Although JON the Mixer planned her grounded series, she actually never caused any trouble so far. Abrielle might be an impersonation of her, according to NintendoYes WeaponsNo who ever stated that she is an impostor of her.

Theories
Theories of Mandy was:

Her voice up until March, 31st was Princess. Due to this, her name is pronounced as "Nandy" instead.

She is an impostor of Abrielle.

Her house reached the four housing limits?

Appearance
She has a light blue blouse with a yellow line, has navy blue shorts, has orange sneakers, has blonde hair and has orange headband.