Psycho was not sane, that was obvious. He was untrustworthy, often attacking creatures on his own side, along with his enemies. Few could work safely with him, or were willing to. Even if his fear of heights prevented him from accessing some areas and he had limited use of his arms, he was still dangerous, armed with spiked balls, sharp teeth and metal clad feet.
Schrödinger, you could say, was the exact opposite of Psycho. He wasn't made for battle, instead being focused around stealth. While he did have a weapon in the form of semi-sharp claws, his abilities were centred on getting him into places no other nightmare could get into, behind locked doors and past barricades.
Schrödinger was often paired with Psycho, a mixture of force and espionage, without fear of any lasting damage on Schrödinger; he could not be killed until his existence was completely unknown, even to himself.
A friendship formed between the two, one that was as fragile as Psycho's state of mind and Schrödinger's long worn patience.
This will be a series of oneshots written with The Cloud (cloud-ninja on deviantart) set around her oc Schrodinger and our joint oc Psycho. I'll be writing for Psycho and she'll be writing for Schro and proofreading/fixing up my grammer.