It used to be Elemental Warstaff, because he was my favorite rune when I first started playing. But now it's Aria and then Isran. I love my shiny runes.
There isn't a favourite rune, more like much more than one I love since the first moment i join this game the Brewmaster, and Master Axeman. Dwarven Windfury is one of my favourite rune too but i realy like Euan and Talgar too, our hero. I cry when Euan died
She's brown, not the same. Mine would definitely be the Dwarven Windfury. An unappreciated little champ that has a lot going for it in the range department. Sweep is also one of my favorite abilities in the game, and he makes good use out of it.
More recently, I Crystal Golem is pretty cool. I like putting up the barrier and slamming enemies into it.
High Mason (you didn't say they had to be a "good" champ) Zoom in and look at his eyes on a higher res image of him. He has CRAZY EYES!