Source: 1st appearance in Earth 2 #18 (2014)
Type: Alternate Earth
Without going into Earth 2's violent history too much, this Jimmy (he prefers James) was imprisoned by the World Army for cyber-crimes as the entity "Accountable", which seemed to be a whole organization of hacktivists. But no, just one guy, though a guy with amazing hacktivist powers. Accountable can process information at incredible speeds through contact with any device with an Internet connection!
Freed by Batman, Lois "Red Tornado" Lane and other heroes, Accountable throws in with them to help against the new rise of Apokalipsian forces, and manages to get chosen by a Mother Box that leaves him with expanded powers.