Taking a page from Spectrum, I present my change to Hulk. Hulk has over the years gone through some different changes, and I wanted to represent that with the below listed changes.

While this does borrow a bit from Spectrum, this is different in at least one fundamental way: Hulk has to revert back to Banner in order to change into a different version of the Hulk. I know it's possible to get his attack or defense to 4, which is the highest in the game, but I think I'm okay with that. If it's too high, we could just get rid of that.

Bruce Banner

Genius. Scientist

Recover: 4

Setup: Put all 3 Hulk Forms upgrades into play, facedown.

Revert - Forced Response: After you change to this form, turn all of your Hulk Form upgrades facedown.

Experimental Research - Action: Draw 1 card. Choose and discard one card from your hand (limit once per round).

Hand Size: 5

Hulk

Gamma. Avenger

Thwart: 0

Attack: 3

Defend: 3

Hulk Out - Forced Response: After you change to this form, choose a facedown Hulk form upgrade -> flip that card faceup to gain that form.

Hand Size: 4

Hit Points: 18

Professor Hulk

Upgrade

Hulk Form. Permanent

Hero Interrupt: Whenever you remove thwart off of a scheme, remove one additional threat.

Savage Hulk

Upgrade

Hulk Form. Permanent

1 Attack

Action: Generate a fist resource (Limit once per round).

Joe Fixit

Upgrade

Hulk Form. Permanent

1 Defense

Forced Response: After you change to this form, search your deck or discard pile for an upgrade card and put it into your hand. If you searched your deck, shuffle it.