2. Quasar
Wendell Vaughn is a failed S.H.I.E.L.D agent who was deemed unfit for field duty and instead given a job in research. His first assignment is at a research facility, where a team of scientists were performing experiments on the Quantum Bands taken from the deceased anti-hero the Crusader. A test pilot who was selected to wear the bands proves very successful in their usage, but he dies when the energy output reaches a critical mass beyond his control. Vaughn puts the bands on when the criminal scientists AIM (who are already in the MCU) launch a full-scale assault on the facility. He repels the attack with the bands' power and when the energy build-up begins to overwhelm him as it did with the test pilot, he decides to simply relax and "go with the flow". To his surprise, the build-up abruptly dissipates and Vaughn realises that the key to wielding the bands is a flexible will, rather than an indomitable, uncompromising one essentially, his lack of a killer instinct makes all the difference. He becomes a hero and, after trying out a few names (Marvel Boy, Marvel Man etc), he settles on Quasar. As Quasar, he possesses the abilities of energy manipulation, teleportation, the creation of solid light constructs and flight. As a S.H.I.E.L.D staff member, he would be very easy to introduce in to the MCU where, like the comics, he could become a key member of the Avengers.