I'm sitting here in a lightning storm, so as I've already done Laxus and the Raijinshuu, 'Gramps' is the closest I could get...

Makarov

They were his children. That was the end of it. If he was ever going to hand over the reins to another master, it would have to be another who loved them like he did, or else he would have failed his wonderful, boisterous, disaster-prone, infuriating, beautiful children.

So the Fairy brand settled in the centre of his chest, for they were the centre of his existence and every breath he took was a choice he made to continue believing in them, supporting them and above all loving them.