An: Please note, this story is NOT SLASH. I am not against slash but I'm not a fan of it, and definitely can't write it, :-P.

An2: Any notes about plot changes or visualization details will always be at the bottom of the chapter.

*** Present

"Harry!?"

"Bruce?!"

Tony looked at the two men, "You two know each other?"

"How's life treating you, Bruce, did the Occlumency help?"

Bruce Banner smiled, "Yes, extremely, I can mostly control myself though my shields and my composure go away completely when I turn."

Harry nodded, "I have something new that I want you to try. I didn't expect you here but I was planning to track you down and have you try my latest concoction, I'll fetch it after the meeting." He tilted his head towards an increasingly more annoyed looking Fury.

"Point of the matter is, Fury, Im willing to help you guys find and destroy your soul gem and deal with this Norse demigod if necessary. Tell me when you have assembled your team, I'll lead them there. Bruce, I'll apparate you home to test this in my lab, sounds okay, Fury call me when your guys are ready."

Harry took Bruce's hand and they apparated to Harry's lab, a cluttered and messy place with several cauldrons and test dummies.

Bruce felt sick, "I didn't know you could teleport like that." He gasped.

Harry smirked and waved his wand at one of the few empty portions of wall and a heavy metal door appeared.

Bruce put a finger on the metal as Harry worked on the intricate lock that was charmed against magic.

"Vibranium." Bruce said in awe.

Harry nodded, "Some of my tests can get very volatile, you turning into the Hulk is hopefully going to be one of the tamer experiments that's taken place here." Harry said as the heavy doors slowly slid open.

"The potion I'm about to feed you is based off the Wolfsbane potion, the purpose of which is to allow the werewolf to keep his or her mind during it's transformation. With your blood sample, I've edited it to try and target the inner Hulk as opposed to the inner Werewolf. If my research into your condition is accurate, this should work." Harry explained as he poured a small vial of potion into a glass, which it filled about 10% of.

"Drink up." Harry said, handing him the vial.

Bruce drank the vile concoction, grimacing at the horrible taste of the dark green potion.

"Now use your occlumency to channel your repressed anger, channel it and become the Hulk." Harry said.

Bruce concentrated hard, letting his shields go and opening the metaphorical floodgates to his anger.

Bruce felt a weird feeling that he didn't usually, like something was holding his mind in a vice grip and refusing to let it flow into the back without a fight like it usually did.

Bruce's body transformed into the Hulk and he started to thrash about as the pain in his skull increased.

Slowly, the Hulk accepted that Bruce was in control this time, but the pain in his skull, though duller, continued to throb and bounce around in his head.

"Ughh." Bruce said articulately, his voice far deeper and more gravelly than his own, but not quite the voice of the Hulk.

"Bruce, can you hear me?" Harry asked, wand ready to stun his friend.

"Harry?"

Harry smiled, "It worked!"

"My head hurts." Bruce said, holding his head in his gargantuan green hands.

Harry conjured some paper and a pen, "Describe your transformation and your headache."

Bruce ran through the descriptions and Harry made several notes.

"Hmmm, from your descriptions, maybe I added too much aconite, I'll put in 2 milligrams less of that, and perhaps add a pain-numbing additive, maybe ground bezoar?" Harry mused aloud, before summoning another paper and scribbling changes on that.

"Err, yeah, you do the wizard stuff, but I have no idea what you're saying."

"You ARE a scientist, Potions isn't that different from chemistry, come, I'll show you my basic reactions sheet."

"Sure, can't do any harm to learn magic chemistry." Bruce said, putting air quotes around magic chemistry.

Harry opened the door again and they exited into Harry's lab.

Harry rummaged through things on one of the less cluttered looking desks before sighing and flicking his wand, having it fly out of one of the drawers.

Harry unfolded the piece of paper, which spread out to look about the size of a detailed map of the world… a very detailed map of the world.

Bruce stared at the thing, the writing on which was so small that he could barely make out the letters if he squinted.

"This is the basic table of reactions, compiled and retailed by myself, but based on extensive research by Potions Master Snape and my mom, Potions Master Lily Potter." Harry said with a touch of pride and sadness.

"It covers anything the average wizard would ever need for household concoctions and cures, it doesn't cover even a third of the reactions required for your potion, but it does provide quite a good starting place to start learning potions. Despite the way it's taught at Hogwarts, the best way to teach Potions is to first make students understand how things react and why things react."

Bruce nodded, taking notes in a notebook Harry had handed him.

In the few hours that they were in his study, Harry covered most of the basic changes and reactions that a normal Hogwarts 1st year would find essential to most of the first semester potions.

Bruce picked up Potions very quickly, in part because he was an adult and in part because he was relatively proficient in chemistry and already had a knack for this kind of thing, Harry had a feeling that if he were a wizard, he would definitely be a Potions Master by this point.

Just as Harry was finishing up his explanations of spider's eyes, his phone rang loudly, interrupting their study session.

Harry picked up his phone, "Yes Fury."

"Get here now, and bring Banner with you, it's time for the Avengers Initiative to begin."

*** End of Chapter.