So I just got Roq-ed hard by the game.
I combined 2 S units that I didn't need and got SS Punisher Roq, who apparently specializes in beating bosses to death with his bare fists.
I have one SSS Ghostblade sitting in storage and my Legendary Daily Dungeon gave me a +19% weapon ATK card followed by an armor and sword set from Deathcrown. These are still sitting in storage though.
The kicker is when I went to get his rapport up by doing Legendary Desert stage 9. The guy busts out from the rear lines and punches the boss to death and this was while I was power-leveling him using my Priest character. He went from lvl 1 to lvl 50 in something like 10 dungeon runs from various dungeons on Legendary (Desert, Deserted Tower, Pumpkin Patch).
It's as if the game is telling me to use him, even though I already have an SS Abyss King for a tank.
Then I combined another 2 S units and got an SS Dark Breath, who is just a beefier version of the S variant.
Still no SS Viri. I need at least an SS AOE healer because my Ranran already hit the limit on her end-game viability.