Mages and their Familiars.
The relationship between the two is like a mirror.
Mirrors that reflect each other.
Mages with a timid personality will contract with a docile Familiar, and those with a fiery personality will contract with an aggressive Familiar.
Looking at the familiar can reveal a mage's personality, so it's a good idea to check the familiar first when targeting NPCs of Mage background.
However, sometimes there are mages who don't have a Familiar.
There are only two possible reasons for this
They're not from the Magic Tower.
Or they were Excommunicated.
-I'm not from the Magic Tower.
Isabelle was an orphan from the streets.
Luckily, she was discovered by a mage and learned magic, but because she wasn't affiliated with a Magic Tower, she couldn't sign a contract with a Familiar.