So I think I'm using the right term by fluff. My general question here is instead of using Lore characters (which I hear are very over powered *insert indifferent facial expression*) I want to make my own. And one of my favorite casts is the Altharan dismounted Hero model. My question is, if I wanted to make my own character i.e. name and fluffy-lore background could I essentially do that; field the hero character as like a Noble/Prince other than himself? Such as fielding two units with the same name on actual paper but, for my character model it be something different? Like prince Altharan from the Island of Blood on Griffon + the Dismounted prince Altharan if I didn't field them as such character names?

And can you also play said models as such in tourney play etc?

Hope to get replies!
-DBH