This fic is heavily inspired by a scene from Agents of Shield, where Fitz seeks revenge on Ward after he leaves him to die at the bottom of the ocean and causes him to suffer from brain damage after he nearly drowns. I would post a link of the scene here if ffnet allowed that XD

I had the idea to write this but as Gordon vs the Mechanic. Gordon ends up nearly drowning in SOS and suffers from brain damage, and now that the Hood has hurt him he wants someone to know what he's going through. After the Mechanic comes to stay with them on the island, he seeks his revenge on the man as he'd nearly killed him in Up from the Depths and he worked for the Hood.

Prompts used: Revenge, Loss of Identity & Alt. Regret

Gordon took a deep breath, before he walked into the workroom.

"Oh, hi, Gordon!" The man in the room waved as he noticed him, and Gordon felt his breath get stuck in this throat.

He froze on the spot for a long moment, before his lungs began to burn and he remembered he had to take a breath.

"H-hi," his voice wobbled, but he hoped the other man didn't notice. He had to pretend like all was fine.

"Did you need something?" The Mechanic asked after several long seconds of him just standing there, not moving or saying anything.

Gordon shook himself into moving before the man grew suspicious.

"Um, I think there's a problem with the… um the," he waved a hand in the direction of the device, unable to find the word, "the thing with the bed and, uh…"

He squeezed his eyes shut and clenched his fists in frustration. Why was this always so hard?

He took a deep breath and tried to remember what he had been learning in therapy. He just had to take his time.

"The decompression chamber?" The Mechanic supplied helpfully, and Gordon nodded, a little relieved he didn't have to continue his struggle.

"Yeah, that. Can you take a look at it?"

"Sure." The Mechanic smiled as he left what he had been in the middle of doing to follow Gordon.

"What's the issue with it?" He asked as they made their way through the hanger.

"I can't really explain it. Just take a look at it." At least that was an easy lie for him to tell. Even if there was an issue, he didn't think he would be able to describe it.

The Mechanic accepted the lie without question, and as they reached the decompression chamber, he started to look over it to search for the problem.

When he didn't see any obvious issues from the outside, he opened the door and stepped into the chamber.

"I don't see what could be wrong. Can you give me any idea of what the problem could be?"

Gordon answered his question by slamming the door shut behind him.

The Mechanic spun around in alarm. "What are you doing?"

Gordon locked the door before the man could get out, and then he started to tap on the control panel that sat on the outside of the chamber.

"I-I'm showing you what- what it was like- for me." His hands shook as he searched for the settings he needed.

"What are you talking about?" The other man appeared at the window panel, and started to shove the door to try and open it.

"The-the, um, the…" Gordon paused to dig his knuckles into his eyes as he grunted in frustration. He could never get the words out when he needed to, but that was why he was doing this. "I'll just show you."

He'd finally found the settings he needed, and he swiped the bar that was currently in green down into the red.

"Warning! Oxygen supply is low," a robotic voice echoed around the chamber.

The Mechanic's eyes widened as he realised what he was doing, and he began to pound against the window. Gordon flinched at the sound, and stepped back.

"Gordon! Let me out!"

"N-no." Gordon clenched his fists again, and tried to control his breathing enough to get the words out, but his lungs refused to work as he stared at the man that had hurt him. "You- you did this- to me. Five minutes. That's how long I- I couldn't- the water, it was in my lungs. I couldn't breathe."

Just like now, he could barely get his lungs to expand.

"Gordon-" The man spoke between panting breaths as the lack of oxygen started to get to him. "That wasn't… me. I… I wasn't there."

"Maybe not then, but it was you, with my dad's- when I found my dad's ship. You still h-hurt me."

"I didn't want… to. That was The Hood, and… and he did this to you." The man tried to push the door open again, but it wouldn't budge.

It was true that The Hood was to blame for his current condition, but that didn't mean the man before him was innocent. He was still to blame. "He's not here, but you- you are."

"Please, just let me out," The Mechanic pleaded with as much strength as he could muster, and pounded against the window with a weak fist. "We-" A gasp of the dwindling oxygen supply. "Can talk about this."

"No, we can't!" Gordon cried, and could feel tears start to fall down his cheeks. "I can't! That's what they did to me!"

"Yes, them, not me." The Mechanic slumped against the door, his gasping breaths becoming shallower. "I'm… so… sorry."

Gordon watched him gasp as he slowly sank to the floor. His hands were clenched so tightly it hurt. His own breath was held, like it was him in there, like they were stealing his oxygen all over again.

Them, not me.

What was he doing?

He darted forward and was yanking the door open before he even realised his legs were moving. The Mechanic fell down at his feet, and he took in gulping breaths as the oxygen met his lungs.

Gordon took staggering steps back, and then took off.

He ran as fast as he could. He didn't know where he was heading, or where he ended up, but he fell against a wall when his legs could no longer keep him up.

He sobbed as he fell to the floor. He didn't know what had come over him. This wasn't him. He just wanted someone else to know what it was like, to know the pain he was in.

The tears continued to stream as the cries tore out of his throat. He couldn't breathe past them. His chest hurt. He curled up so his knees were to his chest and his head was ducked low.

He wanted to stop feeling like this. He just wanted to be normal again. That was never going to happen.

He cried as long as he could in that dark corner of the villa, hidden away from everyone. He didn't want to face any of them again, he knew he wouldn't be able to.

He wanted the ground to swallow him up. He wished he'd never woken up.