Jona was found in a chest in a flooded DPIP facility that had been experimenting on the tark'ee. It took several hours to coax him to emerge, much less follow anyone or submit to medical treatment. While it doesn't seem like he's personally been through any tests, he's clearly badly traumatized-- for one thing, nobody can get him to say a word. It's unclear if his inability to speak is a physiological or psychological issue. Still, he's started to come out of his shell-- he seems to be quite a friendly and curious kid, but he gets scared at very odd things... and very predictible ones, like medical equipment and lab settings. He dislikes being on dry land for too long and has a tendency to go missing and be found in nearby ponds. Jona also doesn't know how to write, so he can't actually tell anybody what his name is-- if he even knows it.