I could easily see Korra calling him that! Now we just need the CR and chances for it! 8D cuties befriending cuties, yeeeeeeeeeeeeeeeees, any time and they can be jelly of great father+daughter relationships because some of them are orphans and one of them is ...special and one of them has weird relationship with his dad (he disappeared) and then this one will just miss her family. Hahah, well that doesn't surprise me at all, it's just how I imagined it. XDD