Since "resurrecting" in late 2011, Kane has only seen action while wearing his intimidating red mask.
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Kane's not the only Brother of Destruction to vacillate between wearing a mask and not. After suffering a broken orbital bone in 1995, The Undertaker briefly wore a mask.
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The WWE Universe catches a glimpse of Kane's sinister-looking mask.
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As one half of the WWE Tag Team Champions, Kane has had his share of disagreements with tag team partner Daniel Bryan.
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With or without a mask, The Phenom is used to dominating the competition.
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The Big Red Monster even keeps his face hidden during a post-match celebration with Bryan and their onetime anger management therapist, Dr. Shelby.
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The Deadman gave Hall of Famer Bret Hart all he could handle in this classic from WWE's Royal Rumble 1996.
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In a move seen more recently by Kane, The Undertaker takes hold and smothers his adversary.
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So, WWE Universe, who do you think looks more terrifying under a mask, Kane or The Undertaker?