Mom didn't name him Klaus.

Reginald Hargreeves tests the abilities of his adopted children in preparation for sending them out into the field. Vanya is called upon to assist. Then and Now series: Part 1.

Everything is happening in sudden bursts, flashes. He's one place one minute, and somewhere completely different the next. This is what Klaus is reduced to. A life in fragments.

They all blamed themselves, really — Luther hadn't been strong enough, Diego hadn't been fast enough, none of them had been enough. And now Ben was dead. Because of them. They'd been fracturing before, splitting off, having less and less to do with each other, but this … this was more than they could take. And they all shattered.

… and the one time he returned the gesture in his own way. Enjoy!

Five had been poisoned, can his siblings help him in time?

Number Six unleashes his inner demons at three years old. If only that were metaphorical.

Diego thinks back on one of his softest memories and finds Klaus. Diego/Klaus mostly angst and fluff

Diego reluctantly picks Klaus up after a wild night of events as he's spent the money he had for travel home on cigarettes. What more can the night offer with a subdued Klaus and an aloof Diego?

An alternate ending to Umbrella Academy

Tres cosas sobre Vietnam. Es una carnicería, el mismísimo infierno, Klaus sabe que debe correr en la dirección contraria; es demasiado fácil conseguir drogas, más de lo que debería; Dave está allí y por eso se queda, por ver qué pasa. / Basado en la serie.

Ben dies and it's so fucking selfish, but Klaus is terrified of seeing him./ Klaus knows what the dead are like.

What if the Hargreeves siblings did a little better?/ "When I was alive, sometimes I couldn't stand myself." He says quickly to catch Vanya's attention. And it does. "I always felt not in control, and when father made me do those things- I thought one day I'd disappear into my powers and just never come back."/ "You did."

Allison has her first breakdown upon waking up in the past. Thankfully, she doesn't have to suffer through it alone. Post-Season 1. One-Shot.

He wasn't a part of this world, but he wasn't a part of the next, either. At least, he didn't think he was. He still felt; he had thoughts and emotions, and he was still able to perceive the world as if he were alive. He just couldn't interact with it. [Ben Hargreeves]

5 times Klaus needed his sibling's help and the 1 time he got it. Based on the TV show.

He wasn't afraid of the ghosts anymore. They looked horrible but they couldn't physically touch him. There were worse monsters that were still alive. Monsters that could hurt him. Part 03 of 'And my brain is like an orchestra (playing on, insane)'

His gut dropped when he saw his brother laying in the tub, eyes wide with fright, pale skin littered with marks of torture and abuse. Duct tape wrapped around his wrists, ankles and across his mouth. He was naked and there were ruminants of blood in the bottom "Klaus." Part 02 of 'And my brain is like an orchestra (playing on, insane)'

No one had been kind to him in a long time. Not in his twenty-two years on this earth. Maybe not in his previous life either if you believed in that reincarnation stuff. Cannon divergent AU Part 01 of 'And my brain is like an orchestra (playing on, insane)'

"You cannot convince me that Diego's heart doesn't stop every time they announce on the police radio that they've found a dead junkie" - ealeczander on tumblr Diego listens to the police radio and prays the dead junkie in the gutter isn't Klaus.

Vanya never forgets. Five is trapped in the future and receives her long-buried messages. Can love survive the apocalypse? And what about the age difference? This is a sweet story with a twist of fucking weirdness. Vanya & Number Five romance. Lots of smut and angst. It starts a little slow but I'll get us there ;) Follows the Netflix show, I'm hoping to read the comics soon.

Klaus uses his sudden sobriety to his benefit. Post-Season 1. One-Shot.

When Allison Hargreeves has a nightmare that starts to become reality, she must make an important decision that could either save her family’s lives, or seal their fate.

Diego realizes that keeping secrets from Vanya may lead to more harm than good. Post-Season 1. One-Shot.

a one-shot inspired by a post i saw on tumblr about the similarities between Klaus and Vanya. What if Klaus visited Vanya when she was in her cell?