But, yeah, no. Jissei is neither the competitive type, nor the cooperative type. Despite having a twin sister, he prefers to do things alone, which is likely how he would antagonize the world, in the event he ever decided to be antagonistic.
Oh, yeah, and sneaky. He would be very sneaky. Maniacal, he does okay. But insidious? Malevolent? He does that well.
And who knows? He may have something in the works already.
“…Judge not what a man has done, but judge what he could have done if he was a different bloke altogether. For art thou a leper? And a leper can changeth his spots…” --Rudy Wade, Misfits (Series 4, Episode 8)