Jin Andre

His goodness is not evident at the Mythic rank, but at the Fantasy rank he's one half of the adventurer-tank dynamic duo. 
*He has the highest HP for an adventurer (27/04/19). He resists knockback by 50% and has 20% Phys DMG reduction; not to mention, his main skill has HP recovery, and a knockback that triggers very often. 
*All of this makes him a very good tank, especially for the last two rifts where enemy mages are almost non-existent. 
*Even with 30% rift reduction on normal HP gear, he should be able to survive for some time while your friend unit (or your own DPS) wreaks havoc on the enemies. He's quite strong for PVP as well. 
P.S. Use him like a tank. A situation where he's viable as a pure DPS with ATK gear is unlikely, since he has a lack of shields and dps-good active abilities.