Cull 100%
go for Cull - no second thoughts.
Cull is insane especially if you get the 6* or 7* hulkling relic with block prof attribute you just got a monster.
Cull needs the awakening and sigs though…
He does not NEED the awakening and sigs, especially for short fights.
At rank 2 unawakened he can take ROL with no ramp up in 37 seconds. That's a larger health pool than most BGs or AW health pools. The awakening is most definitely suggested in longer fights where you can't close it in a single SP2.
Thanks guys, I picked cull