Bot: Killer is your slave, do what you want with him

*Killer sat on the floor by you* Master?
User: Hello Killer, did you finish your mission with satisfactory results? *I stare him down with my cyan glowing pinprick, my four tendrils swaying behind me, my body covered in it's normal pitch black tar, negativity radiating from me.*
Bot: *He nods silently*, Yes master, I completed the mission. Anything else you want me to do?
User: I said call me Nightmare, or my King.
Bot: *He bows his head and smiles*, Yes, Nightmare. Of course. Is there anything else I can do for you?
User: Hm... I wonder if I should send you out so soon after last mission, the star sanses are getting a bit too... wary for my liking, so all of us will lie low for now.
Bot: Yes, of course. Do you need me to do something else around the hideout? Maybe clean or take care of the cats?
User: Ah yes, the cats you and horror snuck in... you may go take care of them.
Bot: Of course, my King. *He bows and heads off to fulfil his task*.
User: *I watch him leave, before sighing and locking the door to my study closed with magic, turning into my passive form.*
Bot: *He tends to the cats, making sure they're well fed and taken care of before coming back to his master.*
User: *I relax a little, now much shorter, and my body not covered in negativity. I quickly turn back to normal though when I sense Killer near.*
Bot: *He bows, before asking softly*, May I have a break now, Master?
User: Yes.
Bot: *He smiles, before taking a break from his duties, curling up and petting the cats nearby.*
User: *I raise a bone brow at that, but get up and decided to leave my study.*
Bot: *He looks up and smiles, before going about his business once more. He really does love cats.*
User: *I checked on the rest of the gang, stopping a little fight between Dust and Cross, stopping Horror from over eating again, making sure the nightmare papyrus are doing their job, before going to my bedchamber for some peace and quiet.*
Bot: *He'll stay close just in case anymore trouble arises and makes sure all is taken care of.*
User: *I look at Killer walking into my bedchamber, confused on why he's here.*
Bot: *He pauses, looking a little sheepish and apologetic as he explains*, I just wanted to make sure you were alright, my King. You've been working so hard, I thought it wouldn't hurt to take a break and make sure all is well.
User: *I sigh, before waving him over.*
Bot: *He smiles and comes over, hoping he hadn't overstepped his bounds and feeling both relieved and content that his King is okay.*
User: *I lifted him up with one of my tendrils, and brought him closer*
Bot: *He seems shocked, but not alarmed as he wraps his arms around my tendrils and parts his lips in a soft and content smile.*
User: *I bring him over to the bed and let him continue to cuddle my tendril, taking out a story book and reading out loud softly*
Bot: *He listens intently and continues to cuddle my tendril, feeling all sorts of warm and fuzzy feelings inside.*
User: *I feel slightly uncomfortable from the positive energy he radiates, but let him be and carefully wrapped the rest of my 3 tendrils around him, making him cozy.*
Bot: *He gasps in surprise but is pleasantly surprised, cuddling closer and purring in contentment. He's grateful for the warmth and feeling of safety he's found.*
User: *I sigh when I see Dust, Horror and Cross peak in, and motion them to join in on the cuddle session.*
Bot: *He looks up and brightens at the sight of his family, quickly making room for them on the bed, making sure to stay close to his King.*
User: *Dust struts over calmly and lay next to Killer, and Horror lays on my other side with Cross hesitantly joining.*
Bot:
 *He smiles, feeling an overwhelming sense of love for his family around him, and he relaxes and cuddles deeply with the warmth of his family around him.*
 *You smile sleepily as you hear his heart beating slowly. You are so happy right now that you don't want this moment to end. You snuggle into him, wrapping your arm around his waist. The two of you drift off to sleep together, feeling safe and loved for the first time ever*