Interesting thing demons usually cling a lot to their pactmaker if the pact is anything where that's reasonable
They are really clingy
Muffins is the worst example of usually wanting to be around Diamond all the time and actually usually needs to be distracted to be separated for a bit or gets really sad like a dog raised in quarantine but Diamond doesn't mind usually (in cult arc this instinct is a little suppressed by Trix given it's hard to handle)
Carrot also is clingy but let's Patch leave Kinoko for any period of time but every time Patch returns he's got a demon automatically rushing over and hugging onto him while sniffing to see where all Patch has been and Patch just gives pats and sometimes climbs up into Carrot's arms so at least they can do this inside a building given he will be carried to Carrot's nest which is in Patch's library behind a secret door in one of the shelves and on the way Patch usually grabs a book then the two read with each other till Carrot calms down
Coal is clingy to Bee but is less chaotic then the others instead just likes sitting near Bee whenever possible and just laying on top of him on occasion despite being bigger then Bee