Ink and Joy

Ink is the small green creature, Joy is the cyclops! She has pink hair and yellow eyes, while Ink just spits green acid everywhere. 

Ink is hostile to everyone except Joy, and Joy is nice to everyone! She doesn't mind if people get mad at her for only having one eye, and she doesn't feel pain! 

Ink eats flesh, and personally prefers bipedal flesh. Sometimes Ink eats Joy's flesh and rests in her ribcage, since it's nice and warm and moist in there, just how Ink likes it. Joy doesn't really mind, as long as they aren't bothering anyone.