Calcifer's Links
Calcifer's had mixed feelings about Lector since she took him in. He's grateful to her for saving him and his brother's life and for also pretty much adopting them, but has been resentful that she hasn't been much of a mother to them.
She has a great fondness for all her 'children' and trusts Calcifer to be in charge of running things while she's away or idle.
Cal thought Will was an orphan when he first saw him and Pie stumble into the Hell Hole, so he took pity on the two by allowing them to live and work at his bar. In a weird way, Cal kinda saw Will as his protégé.
If asked what his relationship with Cal is, Will's response would be that of a mentor. However, what Will would ever admit that he's thought of Cal as more like a father figure when he was younger and that the bartender was also his first crush.
Cal wishes his brother would get out and visit the family more instead of sitting around reading moldy books, but would trust him with his own life regardless.
He wishes his brother would leave him alone, but is low-key happy to see Cal.