Robin Hood lore, Standen’s first acting gig saw him doing live Robin Hood reenactments involving actual swords that caused actual swords that caused actual injuries. He was 14-years-old. I suppose you could say this was training, if not a sign that he would go on to portray a ruthless Viking full-time. Standen gives arguably the strongest individual performance of the series (he, himself, calls it a personal favorite of his career).
Becoming a fan favorite, Rollo’s knack for an unpredictability that has shown both great betrayal and also great loyalty, is what makes his character so much fun to watch. Seeing him grow from a heathen in the truest sense to the commendable war hero as Duke of Normandy (where Standen also got to flex his comedic chops a bit as well), Rollo’s personality has become very nuanced and his journey has been far from boring. A jealousy-filled, vengeful little brother is a trait we’ve seen before in TV and film, but perhaps no one has conveyed these passions as convincingly as Rollo, much credit to Standen, himself. Despite getting a diminished role in his final full season, his was still the most intriguing storyline from those episodes.