 This is also true for Peter and Arthur Petrelli, both of whom have the ability to absorb another evolved human's abilities (albeit with differing results for the original vessel of the borrowed or stolen power).Meredith Gordon and Flint too are brother and sister who both have the ability to start fire.Meredith creates a red flame, but Flint creates a blue flame (speculated for being hotter than Meredith's, which is what happens to fire).