Radon-219 (Element Cattos)
This is a Radon isotope, he uses he/him pronouns and he's male. His other name is Actinon. He doesn't like Hydrogen that much, as his hydrogen bond donor and acceptor count is 0. He's a doctor, but he's not too good at it, since he's a carcinogen, which is also the reason as to why he doesn't have any hair tufts on his head, because he involuntarily gave himself cancer and had to get chemotherapy. He kills people without intending to, and thus, not many people like him, he really wants some friends, though. He listens to Jedag Jedug and Vocaloid, his favorite Vocaloid is Kaito. His half-life is 3.96 seconds. Both of his eyes are white crosses, it's just that his left eye is closed. His whiskers are quite tingly. He has heard of Bismuth-215 and wants to meet em, aswell.