User blog comment:The Deadliest Warrior/Harry Potter vs. Percy Jackson/@comment-2016768-20100923233629/@comment-2016768-20100923234533

Blackjack, in the story (as I have read the series) can keep very cool under pressure and is slightly reckless. He can respond back to Percy. It's kind of like 2 people talking to one another. They can make battle plans.