I disagree. Talorc was very... paranoid to say the least. (I'm not starting a flame war on him). A better choice would be the great Roman general Marcus Tarquin, he was charismatic and knew how to make an insane amount of friends. If he didn't win the civil war, I could see him and his men retreating into Brittania and forging a kingdom.
sure, Talorc was a bit "off the edge", especially when it came to foreigners. but he certainly unified the country and paved the way for greater kings
at that period of time, with the Northnem invading, we Picts needed a King who could keep the foreign invaders at pay..even iff that meant impaling 4000 northmen warriors and settelers (not condoning it though)
Maybe Cunobelin of Greater Cornovia??