After a successful premiere last night, the CW has just released a new promo for the next episode of The Flash titled ‘Fastest Man Alive’. The next episode shows Barry still learning how to use his new powers, and how to grow with the fact of what he is. Barry takes on Danton Black a.k.a. Multiplex! So who is Multiplex? He is a villain who absorbs energy from an outside source and can split himself into two or more separate beings, each possessing superhuman strength.