More details in the comments

A few things I want to set straight:

1: They are NOT demons. They are the embodiments of the Seven Deadly Sins themselves.

2: They are purely evil. Their ultimate goal is to enslave the entire human race. They do not form allies, only enemies.

3: They enjoy their job. They aren't like Death, where they are forced to do it because they were born to. No, they actually relish in leading people into temptation and enslaving them.

Each one has a power that they use to control people:

Greed can duplicate any object, especially if it's valuable.
Pride (AKA Vanity) can create reflections anywhere.
Gluttony can summon food and beverages out of thin air.
Laziness (AKA Sloth) can make people fall asleep.
Lust can hypnotize people into doing her bidding.
Envy (AKA Jealousy) can make any object larger or smaller (to make people jealous of the object).
And Wrath (AKA Anger) can basically just start a conflict with a snap of his fingers.

Then there should be their counterpart

Maybe

I love the fact that greed is simply a gentleman, but laziness/sloth should be able to take energy away from people, cause, sloth, and make people not want to do things

Lust should hypnotize, but i think her main power would be to seduce men, and making them do what she wants

I think Envy should also be able to take form of someone better than the person they are targetting, so that person becomes jealous

Gluttony should also be able to make people addicted to certain foods/drinks

Pride should also be able to make people feel inferior, is that what that means right?

Greed is more of a fancy-clothes guy than a gentleman guy
Lust can hypnotize anyone
Your idea for Gluttony could actually be pretty cool

why not sloth?