Notes:

By ThanhnuFia

Name: Yin (left one) and Yang (right one)
Race: Aquatic Grimm
Location: Fond, lake, fresh water
Fighting style: It will attempt to drown its victim, be it by knocking them down into the lake or extend the lake by headbutting the land around it whenever the victim tries to climb up. Its tail are incredibly sharp, so avoid it!
Recommend Method: The majority of its body are covered in thick scales, but the area around its gills are defenceless – though it's very hard for normal eyes to spot the area. Attacking it there will make this Grimm unable to breath, so it's the fastest way to kill it.