Marcion: The first Protestant reformer?

Are you familiar with the second century leader Marcion of Pontus? Do you know what he taught? Various Protestant scholars have called him "the first Protestant." Marcion was denounced as "the first born of Satan" by Church of God leader Polycarp of Smyrna. Others also denounced him in the second century, yet at least one Protestant referred to him as the original Reformer.