As said before, you are a hollow. A male in life, there is now little outward indication of the gender you once had.
You are shaped like a grotesque mockery of humanity, with an incredibly hard enamel white mask covering your face. Your jaws are exceptionally strong, for a hollow of your level, with big, sharp teeth ideal for tearing into your prey.
You are a classical predator. You don't need any fancy powers or unusual abilities to catch and eat your victim; all you need is to snatch them up and take a bite. You are, ultimately, uncomplicated, though not necessarily unintelligent.
You do not care about any of that fluff, though. No, you are hungry.
You are always hungry.
But you are also weak, being very low in the food circle of Hueco Mundo, the world of the hollows. So you make frequent forays into the world of the living, where you can find weaker, delicious humans (in particular, you are quite fond of females, finding them nice and tender, though you are not picky and will eat anything you think you can get away with taking a bite out of). They scarcely make a dent in your hunger, of course, but then as a hollow there is nothing in any world that can truly sate your appetite, only take the edge off of it.
Still, you do not care about the details. All that matters to you is the Hunger, and the metaphorical scent of Prey.
So you reach out with your senses, feeling out for entities of significant spiritual power (though not too significant -- you have heard the horror stories of the things that have happened to those greenhorn hollows hungry or foolhardy enough to attempt taking on shinigami. Eventually, you find a promising signature -- strong enough to possibly take the edge off of the maddening hunger, but also weak enough the it is unlikely to be a soul reaper.
You follow your spiritual senses, stalking with the stealth of a hollow that has seen enough to know its place in the supernatural pecking order. When you reach the source of the feeling, you find...