Aster is the kind of person who'll pretend to befriend someone and do "friend-like" things with them for the sake of getting information, using them, or both. If they become useless to her, she'll stab them in the back. She has difficulty trusting anyone who isn't a Pokémon or one of her superiors, thus making it hard for her to forge lasting bonds. Those she ends up actually befriending she'll be loyal to and protect to the best of her abilities. Furthermore, depending on how much Aster trusts the person, they may be entrusted with her secrets—such as her undying love of romance novels (something acquired shortly after the vessel was taken over) and the fact that her real personality is hidden behind a mask she wears to help her survive. Aster also is unlikely to reveal her legendary status to anyone unless she's absolutely certain they can be trusted or happen to be fellow legendaries. (She does have markings—connected golden rings running down her arms—but she wears a hoodie most the time. If revealed, she'll claim they're tattoos.) Betrayal means making a permanent enemy out of her.

On a side note, Aster enjoys meddling in people's romantic affairs, even if they don't necessarily exist. (If she senses a potential ship, by Arceus will she try to play matchmaker.) She's more likely to do this with people whom she's closer to, so have fun with that!

It's impossible for Aster not to have enemies given her association with the Republic and the various aggressive and/or cunning actions she's taken for the faction's sake. Both victims of her schemes—"friends" included—and those she manipulated into helping her are more than likely going to despise her, hold a grudge against her, or anything of that nature. (Provided they find out, anyway; she's very careful, making it difficult for her to be caught.) She may even betray fellow Republic members unless they're of high rank. As previously mentioned, Aster herself distrusts most people; thus, doing any kind of dirty work—stealing, beating up others, even killing people—is hardly a problem for her.

In regards to her relationship with the other legendaries, Aster currently holds no animosity toward any—not even the Deoxys she fought some time ago, or Groudon or Kyogre.

Aster has read countless romance novels, and she's slept with various men—either for information or pure pleasure—after sating her curiosity toward human sex. She wants to fall in love and be in a long-lasting relationship, yet she lacks any sort of truly romantic experience whatsoever. (Not surprising, as she spent an incredibly long time up in space or isolated from others, Pokémon included.) Thus, she has an unrealistic view of love. She strives for consummate love and believes that it is not difficult to attain and maintain, despite research stating otherwise. Additionally, she's guarded her first kiss until she meets someone she believes to be "the one". Unfortunately, her standards are high: Her ideal man is a "prince" (who, to her, is more like the men in her romance novels—i.e., not very princely at all) and thus finds it difficult falling in love. Those she ends up "dating" are more than likely victims of her schemes; it's unlikely she'll take the relationship seriously and continue to sleep around.

Anyone who wishes to court Aster must be understanding and patient with her. They must also be able to gain her trust, else it's unlikely she'll become infatuated with them. Once she falls for someone, she falls hard in love. Fortunately, the person doesn't have to be anything like her "prince" (the kind of person she's looking for is as mythical as Arceus). She'll stop being unfaithful, drop her mask around them, entrust them with most her secrets (even her status as a legendary), protect them with her life, spoil them, and remain loyal and loving to them for as long as the relationship lasts.And hey, what's cooler than being the Dragon Lord's lover?

Being the Dragon Lord fused with a skilled Trainer (Rayquaza picked what it thought was the most suitable vessel for it, after all), Aster is always down for battles! Other than that, I AM NOT THE BEST AT PLOTTING TBH... But, I am open to just about anything, so if you have any other ideas, feel free to throw them at me!