- Despite being a former member of the Air Force, he is not fond of conventional magic flying. He believes the true excitement of flying isn't from having BJs protect you while you fly with the winds slamming you at high speed, but rather than vibration of aircrafts, the flight controls of planes and helicopters and the thrill of hitting the winds and the skies literally.
- He makes his own aircrafts and helicopters, using device-construction technology. He actually has little interest in helis, but went and build his own version when he learned RF6 got themselves a Storm Raider that was piloted by Vice.
- He has absolutely zero respect towards Intelligent Device A.Is. By his own words, just a bunch of numbers. Even towards Unison Devices with a stronger semblance of human-like behaviour, he treats them non-chalantly, like an adult talking to a kid who think his doll is alive and merely plays along. He doesn't hate them, but his principles are weapons are just weapons, devices are just devices, dolls are just dolls.. That's all there is to it.
- He has his own table, chair, and window hidden somewhere in every office division he's worked at... in sealed forms, everytime he visits somewhere and decides to stay longer than 5 minutes. He's restless without his own private-space.
- He respects Chrono a lot, but 1/10th the reason is due to the fact he considers them the "same" kind in a way. Despite being 24, Joseth looks 18, and had stayed that way ever since 14 years old. God doesn't give different people the same gift. That's bull, he says.