Complex sentence: Because of this the "suffering circuit" did not completely negate the effects of Zero's maniacal program but instead of becoming a completly homicidal maniac like Zero, he became a cool calculating madman.
Split into simpler sentences: Because of this the "suffering circuit" did not completely negate the effects of Zero's maniacal program. Instead of becoming a completly homicidal maniac like Zero, he became a cool calculating madman.