Null's Links
Null is the aspect of the mind that tries to protect it's self and the Naieve parts of the mind from getting hurt by any means nessasary, such as being cruel first and distant/unfriendly. That's just who Nulls is, and Nifty, is The naive one. So, naturally, Null is very protective of her. Nifty is really his best friend and though he won't admit it, he can't STAND to see her unhappy.
One of these days, he's going to outright kill Patchwork. Only reason he hasn't is because Patchwork is a slippery little worm that always manages to advoid consequence for his actions.
Null refuses to be associated with him, no matter how many times Patchwork claims they are the same. They are very much not so.
Patchwork doesn't like Null, but he's still a joy to mess with. At the end of the day really, he and Null, Patchwork claims, are the same. Two monsters with no good in their hearts who love to torment others for the sheer fun of it.
Null can deny it all he wants, but the cat is no better than him.
He's very, very, VERY protective of Lyn. He'll kill anyone that dare's to say one bad word to her.