Right-handed closer Seung-hwan Oh is available on the free agent like multiple other Korean players. The 33-year old has built up an impressive career in the KBO and Japan, carrying a career 1.81 ERA. Last season, he had a 2.76 ERA, 41 saves, and a K/9 of 8.57. Here are Oh's career stats:
Plus, his nickname is "The Final Boss." Tell me that's not freakin' cool.
Oh would fit on the Rays fairly well. Brad Boxberger had a lackluster season in 2015, which Jared attributed to less pitches in the zone, less deception with Boxberger's pitches, and hitters getting more contact on pitches in the zone.