#1 Dean Ambrose
Most of you might be wondering why Ambrose would do such a thing. After all, The Shield just reunited a couple of weeks back to prevent Strowman from cashing in his Money in the Bank contract against Roman Reigns. Let me assure you, Ambrose's motivation for attacking his 'brothers' is simpler than you think.
Who has suffered the most since the break up of the group in 2014? Dean Ambrose! Who has had to see his former partners main event WrestleMania after WrestleMania, while he was left scrambling in the midcard? Dean Ambrose! Who has had the worst career of all three of these men? Dean Ambrose!
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By this point, Ambrose's mind must be poisoned by jealousy and a need for revenge. After seeing his friends thrive while his own career stagnated into obscurity, Ambrose will surely want Rollins and Reigns to feel the same pain that he has.
Do not be surprised if 'The Lunatic Fringe' finally breaks free of the shackles of friendship and goes crazy at Hell in a Cell.