Spoiler warning. Also, I feel like I'm not truly giving these people hope they deserve.
1. Kurou Daijuji (Demonbane)
I don't know if this character would be allowed or not.
2. Yuki Nagato (TMoHS)
Yuki Nagato is a fictional character in the Haruhi Suzumiya franchise. She is initially portrayed as an introverted, taciturn bibliophile. She is actually an artificial human created by the Data Integration Thought Entity, and possesses supernatural powers as a result. She never officially joins Haruhi Suzumiya's SOS Brigade, but observes and takes part in club activities on the behalf of the Entity while still being the only member of the Literary Club. In addition, she is present to ensure that Haruhi does not use her godlike powers, and aids the other Brigade members in stopping forces that cause her to do so.
3. Accelerator (A Certain Magical index)
Accelerator is the most powerful Psychic in Academy City. His real name is unknown, though Accelerator recalls his surname was composed of two characters and his given name consisted of three characters. A sadistic boy about the same age as Touma. His ability is reflect or control any vector he touches including motion, heat, electricity, blood flow, wind and ultraviolet radiation (resulting in his albino appearance). Accelerator's unique ability make him the subject of an experiment attempting to create the first Level 6 psychic; according to the city's best supercomputer, Tree Diagram (which was unprecedentedly destroyed by Index's Dragon Breath), this feat could only be achieved by killing 128 skilled Level 5 psychics without a single failure. Since there are only six other known Level 5s in Academy City, an alternative plan was formed to "level up" Accelerator by having him kill 20,000 skilled Level 3 psychics: the Misaka clones. He willingly joins the experiment to gain a reputation as the most powerful and feared psychic that no one would be foolish enough to challenge and even killed many who got in his way. In the aftermath of the incident, Accelerator is shot in the head by Ao Amai, damaging his brain and losting his ability. Accelerator recovers his ability in the eight novel by compensating the lost parts of his brain with a choker-type electrode conected to the Misaka Network, but the battery of the electrode can only allow him to use his ability for 15 minutes and he is forced to use a cane. Toward the end of volume 13, Accelerator begins to "awaken" after nearly being killed by Amata Kihara and truly "awakens" in volume 15, gaining Black Wings, when fighting another "awakened" level 5, Teitoku Kakine showing he no longers needs to touch in order to use his powers.