1. Johnny "Dread" Wulgaru (Otherland)
A half-Aboriginal Australian psychopath employed as an assassin by the Grail Brotherhood. He possesses the ability to mentally interfere with machines, allowing him to do many seemingly impossible things. He refers to this ability as his twist.
Exceptionally deceitful, he is a remarkably tough to gauge. Thus, in the real world he is cunning enough to avoid most forms of conflict outright despite his very normal (albeit strong) body. Determined parties can fell him in any way a human can be killed, however they will certainly want plenty of back-up as he's a hired killer.
In the virtual world of "Otherland" (and by extension the entirety of the series' take on the internet) it is a very different story. Having hacked into the system's mainframe and gained incredible control over it he can exert his will almost infinitely. If you kill him he can come back rather quickly, although he will often experience a short-term mental breakdown in relation to his immense ego. He can turn whole environments against you in a matter of seconds; in essence it is very nearly suicidal to go against Dread online.
I don't expect him to progress past the first round, really, but dammit, he's a great character.
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"There's coffee in that nebula." ~SCP~
http://img.imgcake.com/Jeffzeropngus.png