Moss

origin
when millions of vessels except one were sealed in the abyss some of them escaped, one of them were a vessel who was going to become moss in the future. moss was injured and escaped into greenpath and got killed. Unn saw the potential in the vessel and revived moss and gave the name moss to the vessel, Unn trained the vessel to become strong and save hallownest.

Appearance
TBA

Personality
a vessel so it shouldn't have emotions right? well no they still cant speak and uses sign language. moss is kind and forgiving.