I have quite the few but for now I''ll keep it to my more notable companions.
Shoggoth- She/it? joined me after I accidentally freed her during a shoot out. It took some time to get used to her just walking past bars, sliding under doors or just oozing from the vents, she hardly if ever talks or makes a sound and she has this terrifying aura around her whenever she is upset also she is absolutely terrified of Jump-chan and always huddles into a corner is she cannot leave the room in time but she's a good cookie.
Kitsune- Found her during the inukami jump sealed in small shrine where my Intel led me wrong on a cursed artifact on a mountain after I negotiated with the shrine's owner a deal in order to buy it. She is clingy to say the least and it seems all those years of solitude made her insane and her powers unstable so she has to keep her powers suppressed from time to time even after all the therapy sessions. She gets into fights with Shoggoth from time to time and although it's never deadly for the two of them at least, the men usually just take cover and make bets since trying to stop them when I'm not around is a lot of trouble.
Soldier- A shining example of the new White army who I met in platoon. He is a veteran of the first world war and was a loyalist to the Tsar but had to go into hiding when the reds took power, I won't call him a drunkard as I don't even think he knows what being drunk even is but he is a fierce fighter, deeply religious, a man of few words and no one can doubt his loyalty. He joined me after the soviet union collapsed and the white army was restored and on with a little outside help, Russia was back on it's path to glory.
Dog- He is a Dire wolf Organiod that is wearing the skin of a white wolf in order to blend in and is big enough to ride on. When I found him me and my men were raiding an abandoned lab when his tank cracked and he fell out and he has been following me ever since.