Notch
Unknown age and background
Appears to be an older man who has loss majority of his hair with exceptions of his beard and mustache
Hero (brine)
Unknown Unknown
Appears to be a man around age 30 something with velvet purple eyes and near black hair and a deeper tan than his brother.

Steve
A couple months old
Created by Notch with Hero as inspiration but he evolved into someone rather than just a test dummy
Appears to heavily resemble Hero, but as he grows he seems to not look so much like Hero but more of his own person

Villager
Newborn
Created by Notch But was inspired by Steve's small project
Appears to have some resemblance's to Notch

Code
Unknown age
Unknown background
When it cries it's substance is emitted from its pores and when it feels a strong negative emotion it drains out more of its own substance which exhausts them
Appears as a young girl wearing warm clothing

Seed
Unknown age
Unknown background
Uncontrollably releases its own substance from its mouth before its re absorbed into it's body
Appears as a young boy wearing a simple light blue dress