It is clear that Silver Surfer is BY FAR the worst 5*. He needs a huge buff to be on par with other 5* characters. I currently have a 2/2/5 SS, and it is still not worth leveling him up, because the scaling increase I would face in PVE and PVP would put me at an even bigger disadvantage than I have with no leveled up 5*'s. It would be really easy to fix him too. Here are my suggestions:
His red doesn’t do enough damage. It’s pretty cheap, but it should hit a little harder than it does now.
His blue power is fine. Although, his blue and red should create cosmic tiles, instead of charged tiles, and he should have a passive ability that gives a bonus for each cosmic tile on the board (all his attacks do X more damage/cosmic tile, he takes X less damage/hit for each cosmic tile, or each cosmic tile gives him another competitive advantage). This new passive could be attached to either red or blue, since his blue already has the immune to stun passive. You might say this gives him an unfair advantage against Galactus. So what? That’s 1 fight, that isn’t played very often, and frankly he should have an advantage over Galactus that other characters don’t.
His black is WAY too expensive for what it is. There could be 2 fixes for this: Make it cheaper, or make it more powerful. If you want to make it cheaper, it should be 8 AP for what it is now. If you want to make it more powerful, it is a freaking black hole. It should absorb all adjacent tiles at 3 covers, and significantly more at 4 or 5 covers, going into tiles that are 2 away from the black hole tile. Regardless of if you choose to make it cheaper or more powerful, the tile should be fortified when it is created. It shouldn’t be so easy to destroy a black hole by making a match-4.
I feel like these changes would make a character who would have players make a significant decision on how to build him, and would make him competitive with the other 5* characters.