The first is that he creates a cohesive version of a character that works all of said character's history into one unified whole. His work on Toyman and Brainiac are perfect examples of this. The other is that he picks and chooses whatever he personally likes, works that into that into something and then discards the rest., his work on Superman: Secret Origin being a good example of this. Ironically, he does both of these things with the various Legions.
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