Comment by dahoe on Tensei Shitara Slime Datta Ken - Chapter 125

Skill creation. Can make any unique or lower skill her desires. And he isn't actually under Maribel's control. He'll eventually kill her and take her unique skill, Avarice, and evolve it to Mammon, Lord of Greed, an ultimate skill of the sin series

Also rimuru already have a sin series skull belzeebub of gluttonny if im not wrong the redhaired guy, i always forgot its name, have the rage one

In the ln, the skills are
Beelzebub (Gluttony) Rimuru
Lucifer (Pride) Guy
Satanael (Wrath) Milim
Leviathan (Envy) Velzard
Belphegor (Sloth) Dino
Mammon (Greed) Yuuki 
Asmodeus (Lu**) Luminous