Barry Allen is the fastest man alive, tapped into the Speed Force—an extradimensional energy source that allows him to move, think, and react at speeds that make light look slow. He can vibrate through solid matter, time-travel by running fast enough, and has literally outrun the concept of Death itself. The only reason every fight doesn't end in one femtosecond is because Barry is too nice to end it that quickly.

The blue blur, the fastest thing alive, and SEGA's answer to the question 'what if a hedgehog could break the sound barrier and look cool doing it?' Sonic can run at speeds approaching light itself, curl into a destructive spinning ball of death, and in his Super Sonic form goes full golden invincibility powered by Chaos Emeralds. His only weaknesses are water and an inability to stand still for more than three seconds.