For me, she would be tall, and attractive enough to lure potential victims into ticklish situations.. She would be a woman who's sole purpose in life is to tickle people who can't stand being tickled. When she tickles her victims, she feeds on the tortured agony they eminate, like a vampire drinking blood. Though she's a cruel and merciless tickler, she also harbors an affection toward her victims, at least those that survive her ministrations. She cares little for safewords, or issues of consent. If she had her way, she'd capture anybody who happens to catch her eye, take them prisoner, and have her cruel way with them. Her absolute favorite victims are people with a pathological fear of tickling due to some previous tickling related trauma.
She neither needs nor desires any tools for tickling beyond her fingers and nails.