Here's Null. He's an Ice Raboot that doesn't have the standard fur coloring and patterns, instead he's fuzzy all over and uses clothes to hide that fact and try to look like the normal raboots, at least, he think he does.

He loves pushing things to the limit, be it objects, others or himself. He's a complete cold and distant asshole and unless between four walls, he won't loosen up a bit. When he does, he can actually care about others for once, but may still make fun/embarrass the other person. An avid gamer, he loves competing in sports, though handball is mostly his thing. Other past times include, but not limited to, making sculptures, napping/sleeping and making sweets with the berries owned by Jay... Or a custom smoothie, if he likes you that much.
He turns into a complete, stupid mess when he's crushing/in love with someone, either trying to show off and/or just failing on everything.

The 'crystals' are quite soft until he hardens, making them extremely cold, and he can also create snow at will (as long he's not dehydrated), be it from breathing or just passively around him or his fur. Side effects being formation of water droplets everywhere on him, who may turn into ice, though he can shake them off and shoot those sharp bits.