Beating Link? Lucario can combo him for days and has good movement, ROB can combo too and has a projectile game to match, Falco gives him problems with his own reflectors, better projectile in lasers, great spiking, and flexible recovery, and Olimar can play the walling game since the boomerang hits Pikmin (I believe) and they can act as dummies for the bombs and arrows at the right heights., while tacking damage or forcing the projectiles to stop while he knocks them off
Fox also has a fine time dealing with Link's projectiles, as does Zelda (and she can just kick him!). If you're good with Raptor Boost, Captain Falcon definitely has the combo power and can put in serious work against Link (the projectile immunity on Raptor Boost is why I mention him).
Jiggs can also weave around stuff if you're careful (or just duck) and has the gimping power of other characters on this list as well.
Not sure about the physical side of the MU, but if projectiles are your bane, these characters might just have the tools you need.