Regent is generally far more amoral than most of the Undersiders due to his upbringing. He does however care for them; when Taylor asked the team not to get revenge on her tormentors, Regent went against this while controlling her tormentors body with his power. Even though he didn't care, he felt he ought to, as Skitters teammate.  The action ultimately resulted in Sophia breaking probation and getting sent to juvenile detention.
Generally Alec is passive-aggressive when it comes to conflict, making wry comments behind the scenes while his friends try to figure out a problem. However, this does not mean Regent could not contribute to the Undersiders planning. He is noticeably perceptive and astute, but he is largely driven by pleasure seeking. As a consequence, he does not try to keep fit and generally does not apply himself to a task without prompting.
Regent is best described as "a straight-up hedonist", and is bisexual, showing no preference in gender for his partners.
Gets along with his team-mates but is very good friends with Imp. Taylor had no Idea what their relationship actually was. His closest friend on the team was definitely Aiesha, who he hung out with the most. Imp considered their relationship to be an equal partnership that was destined to rule the world. Whether or not it was romantic was an open question given each of their approaches to life.
He was defensive of his team's safety and berated Shadow Stalker for trying to kill Skitter.
In his civilian guise, Alec/Jean-Paul is described as more pretty than handsome, though undeniably attractive. Lanky, with European descent and black curly hair, he wears expensive if not particularly attention-grabbing clothing, preferring to buy new clothes rather than wash something and wear it a second time. Makes a habit of wearing white.
As Regent, he wears renaissance-era clothing, with leggings and loose fitting shirts. His mask is in the style of a Venetian mask, with an attached silver coronet. The mask has a hard exterior and is padded underneath which offers him some protection. When the Undersiders first formed Regents mask did not cover his mouth, later versions of his outfit did.
Alec has the power to cause targeted involuntary movements in the bodies of other people, ranging from twitching a leg, to manipulating internal organs, and inducing vomiting. As an Undersider, he mainly uses this power to trip his opponents during battle before finishing them off with the taser hidden inside his scepter. While useful in combat, Alec's Master 8 rating stems from prolonged use of his ability on a subject. If given enough time to use his power repeatedly, he becomes able to control all bodily functions of his victim. This includes using their parahuman abilities if applicable, and having access to their full sensory suite. He is able to feel the emotions of his subjects and any pain they endure when under his control, but it is not usually enough to effect him. He is able to have full control over multiple people at the same time, but has a limit.
Alec's control over his completely subjugated targets worsens as the distance between himself and the people he's controlling widens or when he is trying to control more people. As a side effect, his own coordination, speech, and fluidity of movement suffers the same extent that the people under his control have. In addition, assuming complete control over a person requires Alec to have a long period of time in close proximity with the subject, up to a few hours, so that he can "learn" how their nervous system works.
While not strictly immune, Alec is highly resistant to the powers of his relatives, such as his father and his sister Cherish. Through concentrated effort they could over power Alec's resistance, but he would have the same opportunity to do so to them.
As a human based Master he was resistant to, and interfered with, similar Masters. Regent control over people kept his sister Cherish from emotionally forcing his puppets to hurt themselves, while her ability to emotionally overload people effectively made them useless to him. He himself was highly resistant, if not out right immune to her, given a lifetime of exposure. His own Father had difficulty effecting his emotions after Alec triggered. He would likely also be resistant to Gallant's emotional blaster power though the concussive element would still effect him. Gallent could likely incapacitate any puppets of Regents much like Cherish did. Alec might also have some resistance to Glory Girl's aura. It is unknown if shape shifting is able to confuse his memorization of a bodies pattern.
Born Jean-Paul Vasil, Alec was the fourth of Heartbreaker's children to develop powers. He ended up undergoing a trigger event at the age of ten due to his father's actions. Specifically, after getting into an argument with his siblings that disturbed his father, Heartbreaker used his power on Jean-Paul, subsequently causing the child to trigger and gain his powers. Jean-Paul worked for his father as "Hijack" for a few years, learning the family trade, until his father began to ride him. Nikos pushed Jean-Paul's limits, forced him to complete dangerous assignments, and forced him to do things that were hard on his conscience.
Eventually, Nikos had Jean-Paul kill a rival foot soldier that was trying to push them out of their territory before telling him that he did it wrong. Jean-Paul realized that, no matter what he would do, his father would tell him he had done it wrong and make him keep doing it.
Knowing his father would continually try and force him to be something he wasn't, Jean-Paul walked away. Hijack would acquire a new identity as Alec and "Regent". He was eventually contacted by Coil and joined the Undersiders.
Once the Undersiders learned that Lung was planning to attack them, they argued strategy for the better part of the day before deciding to meet him halfway. They encountered Oni Lee with half a dozen Azn Bad Boys and fought him. Eventually, Oni Lee got spooked and ran before the Undersiders continued on. They found Lung on a rooftop whereupon one of Bitch's dogs tackled him off while the other dogs landed on top of it.
Regent slid off his mount and then hurried over to the edge to watch Lung fight with Bitch's dog. He told Grue off after he introduced him "last and least", but in a tone to show he wasn't offended. Tattletale then told them that they had to scram and Regent got onto one of Bitch's dogs before they left.
'Totally' wanted Skitter back on the team because she is both good at what she did and to make sure that Grue would 'unclench'. Destroyed Shadow Stalker's career, by revealing what she had been doing to Taylor at Winslow High, and by causing her to break her probation through using his power on her.
PArticipated in the fight against the Fallen and the Teeth. Insuring His imprisoned sister was useful one last time.
He did not send a letter to the imprisoned Undersider leader,but said to say 'hi'.
Killed by Behemoth during the New Delhi fight when he distracted the Endbringer from Imp, stepping out of cover into the aberrations firing range, doing so in order to allow his friend to get to safety.
Though rarely mentioned, Alec has noticeable talent when it comes to drawing and painting, but like many activities he doesn't apply himself.
Clones of Alec made by Echidna are tagged as "Viziers". Just as a regent can step onto the throne of monarchical european countries, so too can a vizier (usually a secretarial position) in Middle Eastern countries.
↑Alec was a very average fifteen year old guy in that he had little muscle worth speaking about. - Excerpt from Agitation 3.2
↑Regent, a young 15 at story's outset, not attending school. Triggered at ten (see 7.1), three and a half years as Hijack, half a year on his own, a year with the Undersiders. Age is questionable, he never really kept track.- Comment by Wildbow
↑“Parian,” Kid Win replied. “A parian doll was a kind of doll about a hundred and fifty years ago. Though Parian’s costume is actually closer to a more classical Victorian style porcelain doll, from the same era.”
“Oh.” That was random. What kind of guy knew that much about dolls?
He went on, “She’s a rogue. Fashion student with the costume and stuffed animals as a gimmick to help her build for a professional reputation and stand out. Tentative rating of Master-6, but we haven’t really seen her fight, outside of the Leviathan encounter.” - Excerpt from Sentinel 9.2
↑One of the other boys spoke, “For any interaction with any flagged shifter or,” the boy paused, “master. Oh.”
“So,” Weld said, “Keeping in mind that Regent is the highest rated Master in the city, I’d like for you to give us this week’s password.” - Excerpt from Parasite 10.2
↑ 5.05.1Regent, Alec (Also Jean-Paul Vasil) – Controls the southeast end of Brockton Bay, a shantytown area which suffered badly from the attack. Sixteen, Alec is fairly amoral, stemming from a childhood spent growing up under the shadow of the emotion controlling supervillain Heartbreaker. His powers allow him to provoke uncontrolled movements or spasms of particular body parts, but his true abilities come to bear when he can gain long-term access to a victim, decoding their nervous system and gaining complete and total control over their body. - Cast (In Depth)
“You fucked with my teammate,” he shrugged her shoulder.
He didn’t let her finish. “I dunno if I care all that much, but it’s the sort of thing I’ll do because it feels like I should. Dunno. There’s also the fact that you’re dangerous, and you’ve outlived your usefulness, so… unless you can give me a convincing reason.”
“Not that convincing.” He raised one foot, then kicked the chair, hard.
It rocked, but didn’t tip over.
He chuckled lightly, feeling the confusion and the relief from his host. It was a thrill unlike any other. “I think I made my point.” - Excerpt from Interlude 10
↑Look at it this way - at the age that many boys are raising an eyebrow at boobs, family members were saying 'hey, here are all the boobs you could want, in various shapes, sizes, and colors'. Interested in dick? Big ones, little ones, crooked ones. Dad's not that into it but a sister can hook you up. At an age when many are just figuring out enough of the world to ask 'what's heroin?' or 'what's weed?' he was given heroin and weed and everything else that was theoretically obtainable and told to only indulge if it was someone else's body. At an age when many are saying 'sex must be awesome' he was given free reign. Where other 12-13 year old boys might search the internet for weird and disturbing porn and kinky stuff just to see what's out there, he could experience it. He was given all of this in a context where people either didn't care or they didn't/couldn't judge (or, considering obligatory big brothers and their teasing, judgment didn't count for a hell of a lot compared to novelty.) - Alec's past prior to joining the Undersiders (Wildbow, Reddit.com, 2017-05-03)
↑Regent shrugged, “I’ve told you where I come from, how I grew up. I’ve seen similar stuff before, only it was my dad’s powers, not drugs. I’ve got a high tolerance for that shit.”
I tried to convince him, “Didn’t you leave Heartbreaker because of stuff like that? Aren’t you just getting back into the same situation with Coil?”
“I left my father because he was trying to control me and force me to be someone and something I wasn’t. It wasn’t even remotely interesting or fun any more. The day that happens with Coil, I’ll leave him too. For now, it’s a good gig.”
These are the people I’ve been associating with? I looked to my last hope for a backup and support. Tattletale.- Excerpt from Buzz 7.12
↑“You don’t hold back,” Shadow Stalker commented, seemingly unfazed by her circumstances. She teyted the strength of her bonds, experimentally.
“Says the person who tried to slit my teammate’s throat,” Regent spoke.
Shadow Stalker looked at me, the eyes behind her mask moving to my throat. “Tough costume.”
She doesn’t even deny it. I can’t believe I’ve gone to high school with this lunatic. I resisted the urge to respond, shrugged instead. Too easy to get into an argument, too easy to let something slip and reveal who I was. - Excerpt from Parasite 10.1
↑Regent – Member of the Undersiders, wears a white mask and renaissance fair clothing, with a taser-scepter. Can inflict involuntary movements and trigger reflexes in individuals he can see. - Cast (spoiler free)
↑He felt an explosion of rage from within Shadow Stalker’s body. Her hands even shook with it. He laughed, and her anger mixed with his amusement to create something that sounded unhinged.
Probably was, when he thought about it. She had multiple personalities, in a way.
He stepped from the roof, and waited until the last second to use her power. Her body exploded into a cloud of shadows. As she pulled back together, he felt a strong discomfort. Not quite pain. In seconds, she had condensed back to her normal form. The pain his hosts felt was something distant. It didn’t bother him half as much. He couldn’t be sure if it was because he instinctually prevented it or if it was something else. - Excerpt from Interlude 10
↑Her movements were more awkward, now. Her reflexes were slower, her balance worse. Activating her power was becoming a chore, a slower, harder process. Above all, it required more of his attention. He had his Regent-self put his headphones in and turn on some music. It was an excuse to ignore the others, and to have his attention elsewhere. They weren’t at their destination yet.
Shadow Stalker reached Stonemast avenue before Regent, Tattletale, Skitter, Imp and Grue got to Coil. It was funny, but with the route they were taking, if the timing was a little different, the group could have theoretically crossed paths with Shadow Stalker. At least his control was improving as the gap between them closed. - Excerpt from Interlude 10
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↑Having emotion manipulation usually appends a degree of emotion manipulation resistance. They'd probably both be pretty darn resistant to one another. That would include Gallant fuzzing Cherish's emotion map. His blast could theoretically knock her on her ass but wouldn't do much more than that (and against those she was controlling, would probably dash whatever effects were present to the winds, or sufficiently confuse/paralyze them to stop whatever Cherish had them doing).
When I say 'pretty darn resistant', I'd really say that the 80-100% resistance they had would veer one way or the other depending on how in concert they were with their passenger at the time of the encounter. - Comment by WildBow on Reddit
↑Darchiasq: It's not breaking SoD that Gallant is a bud off Glory Girl, but it seems very unlikely. I think Gallant has been a cape too long for that to be possible. Another big argument for Aegis being a Cauldron cape is that his powers majorly changed his physiology, which is a telltale sign of being one. However, I don't think it's unlikely that he could be an Eden natural trigger, like Leet and String Theory.
Andrew Greaves: It occurred to me, belatedly, that something like the reverse might be possible.
We know that Glory Girl is a second generation Cape, and the origins of her force field power are rather obvious. But what about her empathic aura? Where did that come from?
It's well known that second Triggers involve polling any other Shards within range and such, but does this also happen with first Triggers? Could Gallant have already been a cape and nearby when she Triggered?
Of course, she could have also second Triggered with him nearby at some point. Incidentally, as a second gen, I'd surmise that her second Trigger would be psychologically comparable to a first gen's first Trigger.
Wildbow: You're thinking along the right lines, re: the source of her aura, Andrew. - Comment by Wildbow
↑Alec shrugged, “So yeah. I worked for him for three or four years. We did jobs, I learned the family trade. Called myself Hijack at first. He started to get on my case. I think maybe he was having trouble affecting me the same way he did before my powers kicked in, so he compensated for that by riding me. Pushed my limits, made me do stuff that was dangerous, stuff that was hard on my conscience. Wanted me to break, beg him to stop, so he’d have leverage to get me to do what he wanted.” - Excerpt from Buzz 7.1
↑"What do you know about how I grew up?" Regent challenged him.
"I know what the Protectorate knows. Not long after Lung was brought into custody, Armsmaster began pushing for details on your group. Staff at the PRT offices were tasked with looking through old criminal records and reports of lesser known parahumans, trying to find parallels. Find if perhaps a supervillain in another area perhaps moved to Brockton Bay, changing their names, costumes and methods. They found you." - Excerpt from Tangle 6.8