6 star rank up choices

Endarkened

Hey so really chuffed just did my first run of 6.4 and got the grandmaster kill (definitely i fight i need to practice, too many revives wasted) and so i now have a 6 star rank up gem and not sure who to rank up. Would appreciate any suggestions.

Currently have Doom, CMM and warlock at R2 - don't have the t5cc for r3 yet so Thronebreaker will have to wait.

My current thought is Mole-man but not 100% sure - as you can see my mutant 6* roster is severely lacking

Sarvanga1_

I'd do molegod.

Kill_Grey

You just beat grandmaster yet you have this many 6*s?

Endarkened

Yep, been lucky with cav crystals, and spent too much over the years.

I got past 6.2 over a year ago then quit the game. Came back to the game in April this year and decided to get some content done.

Des99

claire