He is a wraith from Stargate: Atlantis.
This is Todd.
http://www.stargatecaps.com/sga/s1/118/html/gift017.html Here is a more generic Wraith.
http://www.stargatecaps.com/sga/s2/211/html/thehive394.html And here is another one with a drone in the background.
http://www.fanfiction.net/s/5789570/1/TheLittleThingsGiveYou_Away This is the story of origin. The thing that bothered me the most about it, other than the idea of a Wraith falling in twu wuv with his food, is that this character has nothing in common with the character that is supposed to be in the story--Todd. He is a rather cool mostly bad guy, who has many distinguishing features. None of the them are present in this story, and the Suethor messes up the descriptions that are supposed to identify him.
He doesn't have a name, really. Inside the story, he is never named at all. In the description, it says he is supposed to be Todd. I have been referring to him as Not!Todd, so I figure he will want to pick a new name.
These are the traits that he has been given in the story: His personality is really that of a large pussycat. He has no ambition to take over the world. He likes to read. Wears his hair in a braid and enjoys it being brushed. Is very quiet, and has tattoos running down each side of his face and body. He also has sharp ridges of bone running the length of his spine. Is thoughtful of others, but emotionally distant in actual interactions. Has an apparent weakness for falling in love with Sues. Removed from the Sue influence he might revert toward more typical responses.
The Wraith: Typical characteristics.
They are life-force sucking space vampires, with bad teeth, white to green, sometimes slimy looking skin, cat-like pupils, and bad attitudes. They have a feeding slit on their right hand, which they slam into the victim's chest. They then inject an enzyme which keeps the victim alive longer, and proceed to suck the life out the victim until it is a dried up, mummified looking, husk. Their is a canon formula, if you can steal it from Michael-the most dangerous individual enemy they have in canon-that would turn him into a hybrid that retains most of the wraith biological advantages with no feeding slit, and the ability to utilize normal food.
The wraith are organized similar to an insect hive (they evolved from Iratus bug DNA mixing with human DNA). They have a queen, sometimes one per ship-which are called hives, sometimes one for several ships with male subordinates in charge of the ones with no Queens. The males come in two varieties--intelligent Lieutenant types, and drones that don't even have fully formed faces. The drones are cloned and grown to full adult size in very little time. The Lieutenants are born much younger (it never really says if they are physically born through gestation, though it hints that they may not be. I'd have to watch certain Season 4 episodes again to be more sure on this) and spend time as children who eat normal food. At puberty all human systems shut down. They are capable of swallowing food, with difficulty, but they are not able to draw sustenance from it.
I cannot think of a single time in canon when one of the wraith wore all their hair in a braid. It does seem like I might have seen some micro braids hanging down by the face, like in the sideburns, and in the little wispy beards they keep. They wear copious amounts of black leather-usually in trench coats, pants, and maybe shirts (the coats are usually buttoned at the top), and large boots. They come equipped with a self destruct device. They can frequently read Ancient in addition to Wraith, but I wouldn't expect any of them to be reading English, with the possible exception of the real Todd.
They are very intelligent and have very advanced technology. Their technology is organically based. Their ships are literally grown from a seed placed inside a sentient host. I believe they have excellent night vision, as their ships are always very dimly lit. They maintain the humans of the Pegasus Galaxy as cattle herds. They cull their herds by flying over in ships, called darts. They shoot out beams of light which picks up and stores people. When the people are rematerialized, they are heavily sedated as part of the process, which makes it much easier to put them in either the storage pods (like the Wraith version of a fridge), or into the holding cell where they hold the few they want to eat immediately. The storage pods are very slimy.
The Wraith have huge regenerative properties. If they are properly fed, they will never die of natural causes. They have huge numbers of hibernation pods on their ships, and will spend between 100-500 years at a time sleeping, with only a few guardians.
They can make you see shadows of things that aren't really there. They can also use some sort of mental link to contact their hive if they are stranded or captured. It has a pretty short distance, in that it doesn't reach across the galaxy.
They do sometimes keep worshipers, but the sole canon purpose was for the worshipers to infiltrate and gain intel on the societies that could be gaining potentially dangerous levels of technology, or to sort of try to charm info out of captives. Spies in other words. The worshipers are addicted to the Wraith feeding enzyme. The Wraith are able to give life force to a human or other Wraith, if they really want to, and they have the energy to give. The enzyme is highly addictive in large quantities, and has other interesting side effects, such as increased strength, stamina, and speed. It also lowers inhibitions, increases violence and is generally bad for you when coming off of it.