Do I need to hatch him to get the rewards? I managed to save up some orbs to get him (and later rank-up Gortak), but I don't have enough time to hatch him.
The game says I need to complete the floors, there's nothing about hatching him.
Also he gives no points towards the Legendary Overlords challenge and I want to get the 1500 points chest (I might be able to get it, thanks to the monsters in my storage).