Her personality is vary inline with her cape name.
Golem noted that Hoyden lived with layers of defenses around herself - bravado, sarcasm, aggression, and so on. He suspect that "there were very few things that really got to the heart of Hoyden. When they did, they hurt."
Hoyden's theme was one that looked like a desperado. Her mask was a kerchief with eye-holes that covered her face, allowing for her blond curls to tumble from behind. Her costume were what appeared to be black chain-mail, but designed to look like a jacket and jeans.
Hoyden was a cape with multiple powers. As a striker, anything she hits will explode, while an attacker would also suffer a retaliatory explosion should she be hit. This is in combination with a resistance to damage from other powers, one that becomes better the further the distance from her target.
Hoyden also has basic strength and durability increases, classifying her as a brute. 
Combined, these powers allowed her to take lightning strikes from Behemoth and fight hand-to-hand with Scion.
When an expeditionary force revisited Ellisburg, Hoyden served as suppressing fire for the remaining creations Nilbog had left behind. She was eventually buried in the sludge they left behind and had to be rescued by Defiant.
↑ 1.01.1“Serious as cancer,” Hoyden mimicked her superior. “All Glenn cares about is the image, the PR. Up to you to figure out how to hold yourself like a ‘lady’ while you’re dealing with street thugs with guns.”
“You would know, Hoyden,” Glenn said. “I’d hoped something would sink in for you, with you having more meetings with me than anyone has in the past year.” - Excerpt from Drone 23.1
↑Hoyden? Hard to say. She lived with this wall that she’d erected around herself. Layers of defenses, in bravado or being snarky or being sarcastic or aggressive or avoiding the situation. In combat situations or real life, Theo suspected there were very few things that really got to the heart of Hoyden. When they did, they hurt. How would she react to someone being vulnerable? - Excerpt from Interlude 26a
↑“You may recognize some of the captains of the respective Wards teams. Jouster from New York, Vantage from Los Angeles, Tecton from Chicago and Hoyden from Austin. You know Clockblocker.”
Hoyden looked more like a desperado than a superhero, with a costume that incorporated a kerchief with eyeholes over the upper half of her face, her blond curls tumbling behind, and a jacket and jeans in what looked like black-painted chainmail. - Excerpt from Drone 23.1
↑I waited and watched as Behemoth engaged the other capes, tracking what powers he was using and when. He was presently staggering forward when he could, otherwise holding his ground, deflecting and redirecting attacks. When he was free to do so, he reached out with his claws, and lightning lanced out to tear through the assembled capes.
Golem, to his credit, was going all out. Hands of stone and metal rose from the ground to shield defending capes and balk Behemoth’s progress. I could make out Hoyden, leader or second in command of the Austin Wards. She wasn’t on the front lines, but was defending the mid-line capes. It made sense with how her power worked, as her defensive powers provided more cover from attacks at greater ranges. She threw herself in the way of lightning bolts and stood between Behemoth and the wounded. When lightning struck her, detonations ripped out from the point of impact, seeming almost to short out the currents. - Excerpt from Crushed 24.3
↑ 6.06.1I could feel the fear of the people I was sending into the fray. Hoyden’s fear was like the scared-little-girl fear I’d experienced while concussed, wracked with pain and helpless at Bakuda’s feet.
But she could hit Scion, and I needed people who could hit him. I needed every iota of strength I could squeeze out of these capes. - Excerpt from Speck 30.5
↑On the rare occasion regular people get Eden shards with all of the drawbacks of a Cauldron vial. I saw Abattoir's power as a kind of failing of the system, really. If I did anything, I'd retcon it as a multi-trigger somehow. A Flechette-like/Hoyden-like scenario. - Comment by Wildbow on Reddit