#7 Sin Cara

Oddly, if you follow WWE's social media, Sin Cara still does a lot of work for WWE - even recently visiting Premier League team wolves to meat Raul Jimenez, who used Sin Cara's mask for a goal celebration.
If you've only started watching WWE in the past year or so, though, you're probably asking, "Who's Sin Cara?"
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Sure, injury has blighted Sin Cara for the past two years, but he did make his return last year to feud with Andrade, only for a one-match blow-off before undergoing surgery again. In March 2019, he was cleared to return to in-ring action and returned at Super ShowDown in June, competing in the 51-man battle royal, but that's the last we've seen of the luchador to date.
Regardless, he is a great ambassador for WWE, but you can't help but feel like he's being wasted.
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