<---This guy. Keth Surana. My canon Warden.
I based his appearance and his name after one of my old original characters. Just narrowed his features to make him look more elfy. Some of his unusual personality features were the result of using headcanon to explain my poor CC choices (Surely a voice set labeled "violent" isn't necessarily violent...right? Brilliant deduction!) and some odd dialogue choices. So I ended up with a nice, polite, empathic elf with a touch of PTSD and/or something that resembles a personality disorder that brings out a violent and manic personality when he's in dangerous and stressful situations. So he goes between being a cupcake to being a bloodthirsty maniac on the field.
The events of Awakening hardened up his personality a bit, and his lawful goodness fell into a grayer area. Being forced to kill a bunch of starving peasants really messed him up, especially when he learned it happened because he had hesitated in dealing with the conspiracy against him. He came to the conclusion that the only way he could prevent it from happening again, the only way he could make the Banns respect him, was to crush his political enemies with gratuitous use of lightning and fire. His command style has been very no-nonsense since then. But he's still a good-natured cupcake with his friends, especially if your name is Alistair. Poor Warden forever holds an epic torch for Alistair. Alistair was the main reason he agreed to the Dark Ritual despite his huge moral reservations, because of the risk that Alistair would be the one to strike the killing blow against the Archdemon. But eventually the Warden went to Antiva, where Zevran finally succeeded in getting into his pants. But Morrigan got there first, so there's an OGB out there somewhere, and this is still a huge concern for the Warden.
I have so much headcanon with this guy. Jowan saved his life (from tranquility) when they were kids and they remained close after that, even as they became more of an odd pair as they grew older. Surana developed a one-sided crush on Jowan when they were teens. Wynne was the mentor that Surana was closest to and she had a great deal of influence on him. He likes to cook because it was a better chore than laundry when he was an apprentice. His grandfather is a Dalish Keeper, and is still alive. His father was a self-exiled Dalish and his mother was a City Elf, and neither are still alive. His father wanted to incite the City Elves to rise up against the humans, and died in a riot of his own making. The first time Surana's magic manifested, he was six years old, and he killed the thief who murdered his mother in front of him. He's Andrastian, but he became more interested in Dalish beliefs and traditions over the years, resulting in a personal hodgepodge belief. Due to this, Velanna chewed him out repeatedly for being the worst elf ever. Etc...
I never expected to get so attached to him. There were times when I just wanted him to shut up about ladders already.
I'm certainly hoping I'll get to recreate him in DA:I for a Warden appearance.

But even if the Warden doesn't appear, I might try remaking him anyway at some point.