A hood pattern is usually a basic pattern addition. I don't know of any patterns because I don't ever use them. I always use notations of how the fabric drapes to get a feel for what I need to do to get it the way I want.
A hood is ROUGHLY, two half circles sewn together along the curved edge to fit your head. To get a Nightwing, pointed hood, draw a large half circle on a piece of paper. Make sure it's a little larger than the rough approximation of half your head. Extend the portion that should drape down your face so that it looks slightly like weird egg. Don't make the point too pointy. It'll look weird. Make sure to hold the pattern up to your head to be SURE that it will fit you properly. Imagine your head was cut in half, lengthwise, between your eyes. The curved part of the pattern should line up with the center line of your head along that axis. Use the rough pattern you draw to cut out your fabric. Pin the curved sized of the fabric together and test it out before proceeding.
Notice on the drawing that he has a hood over a cape. So, he essentially has TWO capes on. The shoulder covering part of the cape should be made, roughly like you'd make a scarf, but with a closure in the front so it doesn't slip off. Use paper to help you figure out how to line it up on your body, then trace the lines where you want it to fall on you and use that paper pattern as a guide.
Also, keep in mind that the deeper the hood, the more the fabric in front will form a point in front of your face.
Because it's more than one color, I suggest making the hood in BLACK first, then cutting out blue designs and sewing them to the black portion like an applique.