3. Beast | 4. Mystique
One of the big surprises coming out of "First Class" was the love story between Hank McCoy and Raven Darkholme, better known as super-scientist Beast and shape-shifter Mystique. Though they wound up on opposite sides of the war in the end, one imagines that their story is far from over, given that both Jennifer Lawrence and Nicholas Hoult are officially back for "Days of Future Past." And since they're going to be front and center, why not bring back Kelsey Grammer and Rebecca Romijn to gift their younger selves with some much needed wisdom?