I am making a captain america build that is going to be a shield champion, mutagenic mauler brawler and then i am goin to dip into barbarian for rage and fast movement. I will also get martial weapon proficiency from barbarian so i can use shield spikes and eventually get a warhammer (close weapon group weapon special) with the returning special weapon quality. My strength will be 26 at 2nd level while raging and with mutagen active.