I'm psychic. I can't keep this up for very long, though. Your trainer thinks you might be psychic, too; can you do this yourself?
I have an idea, though; whenever you do this can you speak the same words out loud? It might help with the language problem.
"The Murkrow were tearing him apart," objects the guy who threw the ball at him. (The psychic translates.)
The girl who went and got the psychic is translated as saying, "He looks like a human. Murkrow could tear a human apart too."
"I caught him."
"That, I have no explanation for."
He says mentally, I'm human. I am the— My name is Rashek. I'm from another planet, and your birds here are insane.
"I haven't heard him say 'Rashek' even once," objects the guy who caught him.
"Points against your 'he's just a Pokémon' theory," says the girl.
The psychic translates this. The talkative girl puts in, "Pokémon are non-human creatures, like the Murkrow that attacked you. They're almost all named after the sounds they make."
The psychic looks tired. If you're a human why did you go in the Pokéball and how did you survive the Murkrow attack?
I survived the Murkrow attack because, while I may be human, I didn't say I'm an ordinary human."
He manages to get through saying it verbally.
"What's so special about you, then?" asks the boy who caught him.
A little bit of curiosity suppression should be the exact opposite of a helpful demonstration. He glances at the talkative girl; she was unaffected. Odd.
"Naw, come on, tell me," says the boy who caught him, "before Joe gets too tired to translate and I have to put you away."
The Lord Ruler wears shirts with metal buttons. When he turns to face his captor, there is a detachable piece of metal between his center of mass and the boy. He can, literally, kill him with a thought. If necessary.
"Dude," says the talkative girl, "he says he's a human and even if he wasn't a human he can talk. Intelligibly."
"He goes in a Pokéball and I caught him, Bella, you go on about your Linoone being near smart enough to talk -"
"Yeah, but he doesn't actually and also Zag volunteered to be mine, which is not what you're looking at here -"
It's probably true. He knows it's true because he's burning zinc, and emphasizing this person's sense of empathy, moral duty, all the messy stuff. In quantities larger than usual, since the curiosity dampening wasn't very effective.
And a bit of fear; fear of him is always a good standby.
"What? What's he doing?" asks the captor, alarmed.
"I don't know, that's why I asked him!"
"Oh. I think I know what you mean. My kind of humans talk only mostly verbally. There's a psychic part too, and I was being psychically louder just now. Did it look like he was catching emotion from me? I can remember to keep it quieter if it's distracting."
"Quieter," agrees the psychic. "Yeah, uh, don't do that. Maybe you'll bounce off Bella and I can sort of tell well enough to get along but anybody else is going to catch it and not know what to do with it."
"Bella can't hear this kind of thing?" He turns to the indicated person, pretending not to have tested it. "That sounds unfortunate."
"I caught him fair and square."
"You can reuse the Pokéball."
"You can't tell me what to do."
"Can't be convinced? Because she's literally right; you can't keep me. If you try to throw that at me again then you will fail. If I have to, I will defend myself."
Larry grumbles. "What, you want me to just leave unsupervised - I took him to a Pokécenter, he's probably associated with my trainer ID now!"
"Rashek," says Bella, "Larry is currently potentially legally responsible for anything you do. If you're going to do things that might get him in trouble he really, really won't want to let you do any things. Is that sufficiently clear?"
Rashek laughs. "Completely. It does make it sound like there's an obvious way to make Larry want to disclaim all ownership, but don't worry; I won't use it."