In order to try and understand Devarious, it's necessary to know that there are two ideas of what an avatar is.
Some users see their avatars as virtual roleplay characters in a virtual world. They like to immerse themselves into the world, and they act accordingly. Their avatar isn't them, it's a fictional character, a role they play. They aren't interested in your real life, and they won't tell you anything about theirs. At most, they may give away a little information they deem necessary on the "1st life" page of their avatar profile. They're likely to have alts that are different characters again. I call them "character-centric".
When they have virtual sex, it's their avatar having sex with another avatar. It's basically interactive porn. They don't mind if the user behind a female avatar is a guy as long as the character is hot, and the user behind that female avatar is clearly character-centric, too. Character-centric users tend to have sex more easily because it's never them who has sex, it's always only their avatar.
Many more users, however, see their avatars as nothing but 3-D profile pictures in a chat app and the virtual world surrounding them as not much more than decoration for that chat app. They don't even know the concept of immersion. They're the kind of people who put real-life photographs and real-life information on the "2nd life" page of their avatar profile. They have a hard time accepting OpenSim users having avatars of the opposite gender, and their belief is that all crossplayers are closet transpeople or at least homosexual. I call them "user-centric".
When they have virtual sex, it's two real-life people, namely themselves and the real-life user behind the other avatar, having cybersex. This also means that the gender behind another avatar is very important to them. If they're a guy with a male avatar, having their avatar have sex with a female avatar with a male user amounts to gay sex to them because they'd have cybersex with another man, regardless of the gender of his avatar.
These two approaches to avatars are incompatible to one another. And what really makes all this a problem is that many user-centric OpenSim users believe that everyone is user-centric. They don't even know that character-centricity exists. They can't imagine the very concept. And thus, even if they meet someone who is very obviously character-centric, they fail to see, much less comprehend it and treat them as every bit as user-centric as they themselves are.
On the other hand, the character-centric user refuses to switch to full user-centric when meeting an avatar with a user-centric user. That's also because their avatar is not them, is not supposed to represent their real-life self in OpenSim, but a wholly separate person, a fictional character.
It isn't unlikely for character-centric users to have multiple alts of various sexes, every single one of which has a distinct in-world personality, and none of which represents their real-life selves. User-centric users will always believe when encountering such an avatar that this is the actual real-life personality of the user behind the avatar. The advantage is that they won't easily suspect these avatars to be alts of one another.
Some character-centric users, in turn, aren't even aware that user-centricity exists. They believe that everyone in OpenSim just plays a virtual character that's separate from their real-life selves.
When both kinds of users have their avatars meet for sex, this can get dangerous. Let's say we've got two avatars, male Usain, a straight, user-centric male user's only avatar, and female Charlene, a character-centric male user's female alt.
Now let's assume they meet at some nude event, and they want to have sex with each other.
For the user behind Charlene, it's just an erotic act. As I said, interactive porn with two virtual, fictional characters involved. Charlene happens to be horny from all the naked guys around her, she needs some satisfaction, and when Usain shows up and appears to be a nice enough guy, she agrees to do it with him. It's more fun with another actual avatar than with some NPC rezzed from a beach towel or a massage table and disposed of afterwards. The user behind Charlene sees Usain as another virtual, fictional character that's completely detached from his user. He isn't interested in the real-life person behind Usain at all. That'd just ruin the immersion.
The user behind Usain is vastly different. He wants to have cybersex with the user behind Charlene. For him, Usain and Charlene are profile pictures used by real-life people in a 3-D chat app. Just from seeing sexy naked Charlene, he starts obsessing about the real-life person behind her. He keeps nagging and nagging and nagging Charlene about her real life which she refuses to tell him anything about because that's none of his business. He either demands confirmation that the user behind Charlene is a woman which he won't get because Charlene says that's none of his business either, or he projects Charlene's gender onto her user and blindly assumes and convinces himself that the user behind Charlene is a woman. She absolutely has to, it can't be any other way.
After having sex, the user behind Charlene will have to keep his real-life gender a secret even more than before. For if the user behind Usain found out that "Charlene is a guy in real life", he'd be deeply disturbed and utterly devastated because he'd find out that he has just had sex with another man.
Again: The real-life user behind Usain has had cybersex with the real-life user behind Charlene, at least according to him. For him, it's sex between two real-life people via the Internet.
According to the user behind Charlene, however, his fictional role-play character Charlene has had sex with the fictional role-play character Usain. For him, it's like 3-D animated porn or a sex scene in an erotic video game, but much more interactive.
If the sex was good, the user behind Charlene would love to repeat it some day... if it weren't for the user behind Usain still obsessing over Charlene or rather the user behind her. Usain will try to get into contact with Charlene again and again so that his user can have more cybersex with what he assumes to be her user whom, in turn, he assumes to be a real-life woman, not to mention squeeze out more information about Charlene's real-life self.
For this very reason, the user behind Charlene will instead have her keep a distance to Usain, maybe even keep her offline for a while or only log her in when he knows that Usain won't be on. He hopes that, with the non-availability of Charlene, Usain will turn to another female avatar to have sex with and obsess over.
Devarious is clearly character-centric. Otherwise, he wouldn't be able to have multiple avatars with different, distinct personalities. However, he uses his character-centricity and his many alts to his advantage by tailoring alts to the tastes of other avatars/users. Now it's fair to mention that not all character-centric users are like him.
I'm not sure about his intention, though. Either Devarious is unaware of user-centricity, of avatars actually being the people behind them, and assumes everyone just plays a role online, and he seeks out virtual, fictional characters for his own virtual, fictional characters to have sex with.
Or he's fully aware of user-centricity, he knows how user-centric users tick, he knows how naïve they often are, and he uses this knowledge to his malicious advantage. He plays his alts like user-centric users' mains to trick those user-centric users into cybersex who would never expect an avatar not to be the person behind it. He makes them believe they've found like-minded real-life people via OpenSim, he makes them obsess over the real-life persons which he pretends are behind his avatars, he seduces them with ease, and when they're done, he ghosts them.
Poor Cyberglo, in turn, sound fully user-centric to me. Not only that, but I guess that he didn't suspect something like character-centricity to even exist before he encountered Devarious, and that he assumed that each avatar is a virtual representation of its real-life user.
Cyberglo was Usain, and Charlene was one of Devarious' alts, but in this case created for rather sinister purposes.
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