Yes, this is this guy's real name from the series. It's not a mistranslation, it's printed right on screen in the episode...in english. You can be sure THIS one will be changed if this series gets dubbed. :P Anyways, 20 years ago from Netto's present time, Jackass was a clever little criminal who was intent on cracking and robbing every cyber bank he could find.

Just as he was about to deplete his largest bank yet, Barrel and Colonel stepped in and smited him rather heavily. Their cooperation with the police lead to the full arrest of Jackass, and to the present day lives his miserable life behind bars.

I still can't believe they would name this poor character Jackass. So very amusing!
This character description was made for episodes that I have seen so far. It may be updated as more episodes become available.