#8 Sheamus
It's odd to call a guy who WWE features so prominently 'underrated', but in the same vein as Roman Reigns, the WWE Universe just doesn't seem to 'get' Sheamus.
It's probably because the Celtic Warrior has never had that legendary run at the top that he deserves, despite being a multi-time world champion.
A female WWE star said her life is in danger. Details HERE
Sure, The Bar is great, but he's even more impressive as a singles star.
Sheamus has had some truly great matches during his near-decade run with the company, and with a few tweaks to his character, he could still be used as a main event star.
Alas, he seems destined to remain as a tag team wrestler for the foreseeable future, and given his age alongside his rumoured injury problems, he may retire sooner rather than later.