This four week old kitten is different from the others in the litter. The others are gray. And the others like to be picked up and held on their back and have their bellies rubbed. But this one hisses and extracts its claws and fights when you try to hold it and rub its belly.
Cheesemeister wrote this about the kitten in a comment a few days ago: The one with the orange pattern on its face is most likely a female, as it is a tortoise-shell cat (like Isis the Pyro) and most tortoise-shell cats are female. Seriously! This is the knowledge they teach you in college biology. A tortoise-shell cat that is male is either an abnormal XXY chromosome pattern, and will be fine health-wise but is sterile, or is a chimera, which is an animal that has two different sets of chromosomes.
Little Noname Cat had her kittens upstairs in the empty bedroom, but she missed being with the dogs and humans in the living room. So she carried her newborn kittens downstairs and put them in the corner by some furniture. She likes to be with the pack and lays in the floor with Icy. When she goes to eat, Icy often goes over and checks on the kittens. They are one big happy family.