Fuwawa Abyssgard

The fluffy older twin sister of The Demonic Guard Dogs, who were sealed away in The Cell for being a pain in the godly behind, Fuwawa Abyssgard is "The Fluffy One."
Her duty is to calmly look after her younger twin sister Mococo and their pet Pero, but that calmness can be short-lived. Ultimately, she is a bouncy and boisterous girl who loves to chat and play.

Source: https://hololive.hololivepro.com/en/talents/fuwawa-abyssgard/