The stereotype of all enchanters being manipulative and stealers of willpower are by and large a subsect of enchanters. Where most enchanters will only use their power to overcome problems the puppeteers are notorious for stealing their victims will with little compunction.  

Their strength is also their weakness, most if not all puppeteers have a well grounded fear that they too might actually be under someone else's control

Eyes of the master

Beginning when you select this school at 2nd level, you can spend a full round action to see through any target you have charmed or dominated. 

While this ability is active you can't see through your own eyes and are effectively blind

Life long friends

Beginning at 2nd level, whenever you cast a charm spell, the spell last One additional hour per wizard level.

This ability can only be used once per long rest

Reconditioning

Starting at 6th level, any target you have charmed or dominated suffers disadvantage on futher charm and dominate by the puppeteer 

Dominion

Beginning at 10th level, any charm or dominate spells you cast act as 2 higher levels then normal when cast without taking up the corresponding spell slot (using this ability you could cast dominate as a 7th level spell while only taking up a 5th level spell slot).

This power can only be used twice per day

For the master!!!

Starting at 14th level, when a damaging attack would hit you, you can instead as a reaction make any if your charmed targets intervene and take the damage for you.

Only attacks that target the caster can be redirected, aoe attacks or spells that cause no damage cannot be redirected. 

If the target of this ability survives, they get a new saving throw.