Somebody of an as of now unconfirmed real name, with the best guesses being "David (Frederick or Franklin) Hoffman", or "James Conrad". Note that these are both German surnames, Hoffman is more likely due to it being a northern-German surname, and less likely Conrad due to it being a very Bavarian surname. It is very likely he is German, possibly Norwegian as well.
This is NOT the furry artist known as "Leto"; they are, at least overwhelmingly, two completely different and unrelated people.
He has two facedoxes, and there doesn't appear to be consensus on which, if either, is accurate.

(dated about 7 years ago)

(dated about a year ago)
He has numerous doxes, none of them particularly confirmed; the general trend, and various circumstantial and annecdotal details, such as his accent (if voice clips are his), suggest he is from Texas, the Dallas area.
He is about 25 years old.