Galactus can control and manipulate souls....do you realize how powerful that statement is?Thanos has a soul correct?So does probably any other big bad he could hypothetically face....so he could compress his soul into the size of a pinhead for a thousand years if he chose 😂 or until Thanos body aged and withered to dust with no soul left to pilot it.

I thought Colossus was now adamantium? Discovered by Wolverine while being held captive by Weapon X, it's said that thanks to Weapon X's meddling, Colossus is now “permanently comprised of solid adamantium....

HULK's strength (and if done right the HULK himself) grows with his rage.So if he in theory gets "riled" up enough he should grow very huge and his strength would be astronomical!