I admit, a red turtleneck and black cargo pants works for me. If you don't mind body-hugging, I'd probably go for something that fits quite close around the breasts and waist, no-sleeves so the arms can move freely and because I don't perspire, I sweat, so it's better for me to have skin-breathing space.

Not sure about an insignia, but I've always envisioned a costume with a sprinkle of glitter diagonally from the right shoulder over the breast and down to the hip - like a gleaming silver slash.

I suck at knowing anything other than the standard famous superheroes from the major comics houses. And if I suggested any origin stories, they'd probably be for superhero characters I imagined for myself.

But I always liked the telepathy/telekinesis duet. :)