How do you feel about omnipresence as a power?

A character that is everywhere, at EVERY given time, he has no super strenght or Amy other hability that would surpass a normal human.
Cannot be killed by normal means, he exists as long as he believe that he exists himself. The only way for him to die is if he kills himself, if someone control his mind and body to an extent of making he believing that he doesnt exists etc. Etc.

Sound familiar? *Ahem*schrödinger from hellsing*ahem*

Or maybe a viera from final fantasy? Very strong legs, extreme agility and speed, leporine Features, including big ears, fluffy tail, paws and claws, extremely enhanced hearing, deep connection with the flow of magic and nature that surrounds them, being able to feel auras, magic etc. Able to speak with the nature spirits.
Sensible to high concentration of magic, entering a frenzied (berserk) state, in which it becomes able to tear metal, getting stronger than it already is while becoming very tough and very hard to take down. The downside is that its completely berserk... it will attack everything and everyone.

Or maybe a neshiga (Race from a RP i was a while ago. Not sure from where came the inspiration) basically cat-people. Resemble felines like panthers etc, depending on the tribe. Extremely dense bodies, can weight up to 130-140kgs. Elegant and slender frames, their muscles are extremely strong and compact, their bodies are agile and flexible. Due to their high corporal density, they cannot swim. A warrior Race, masters of bladed weapons and throwing weapons. Natural stealthy and its hard to hurt one of them, their muscle tissue is much harder than a human's

Name: Kaminari Hotaru
Nicknames: The Firefly Maiden, firefly, Lady Hotaru (by her familiars)
Age: 16
Gender: female
Race: onmyoji
Appearance: "I'm not much..."
Personality: Hotaru is a quiet person. She isn't a fan of social interaction, because she has poor conversational skills and is afraid of scaring people away. She is a real softy, but due to her antisocial demeanor people mark her as cold and mean without attempting to meet her. Hotaru hates to see people upset or hurt, and always helps those who need it. However, she still avoids any form of relationship out of fear of getting attached.
Abilities:

• Familiar summoning:
  
  • Inugami, the wolf-dog demon
    Wolf form [+]

    But with blue eyes.
  • Nure, the snake demon
  • Juju, the tanuki
  • Will O' the wisps
• Paper Talismans
  
  • Healing/purifying
  • Barriers
  • Sealing and banishment
• Blessed "Golden" Fire

Skills: Hotaru has incredible magical abilities, being able to control blessed fire rather than just the usual Wu Xing element. She plays the flute beautifully, and has the ability to sense evil.
Weaknesses: She is not physically strong and often comes down with fevers because her magic is too much for her weak physical body to contain. She cannot fight in close combat and can only summon two familiars at a time. Though she can sense evil, it suffocates her and can make her faint if she's surrounded by it for too long.
Equipment:
Heaven's Note her blessed flute. It increases her spell potency, range, and accuracy. Only the owner can play it, and anyone who hears the notes will be under the spell. The flute will become unbearably hot if anyone else tries to play it but Hotaru.

• Song of Healing: can slowly heal allies in the area
• Song of Protection: creates a barrier against evil around allies in immediate area. Makes people inside feel safe.
• Song of Spirits: summons Will O' the Wisps to do errands such as search for a missing person.
• Song of Fire: summons golden flames that are blessed to attack with.

Brief Backstory: Her father was an onmyoji who fell in love with her mother, a priestess. He died saving the mother, pregnant with Hotaru, from a wild yokai. Her mother raised her but soon left after her fifteenth birthday, telling Hotaru that she must learn to take care of herself. She left Hotaru with the shrine and it's guardian, Inugami, as well as a shikigami egg that Hotaru raised to later hatch Juju. Inugami caught Nure trying to attack Hotaru in her sleep, and the snake demon asked to become her familiar. Hotaru agreed, much to Inugami's dismay, and now the two constantly argue over their Lady.