Gulas have neck mouths that go vertically down the front of their necks. Gulas are like a cursed reincarnation of someone who suffered from the sin of Gluttony in a past life. It has no gender and it goes around consuming just about anything that looks tasty that can fit in it's mouth, it also likes to punish those who embody the Gluttonous behavior it itself is being punished for. ;)

These all have similar markings because they're part of a theme for these, there will be slightly cheaper versions coming later that will have random themes instead of the themes based off of the other sins.

1- Wrath Gula->  nemphisis
2- Greed Gula-> :iconnorthwestspiritwolf;
3- Lust Gula->  jadekatt
4- Gluttony Gula->  darklingirl

Edit- inside of the mouth + tongue are the same color as the eye. :)