Blurryface is the opposite of Tyler Joseph. Blurryface would be Hyde if Tyler was Dr. Jekyll. Blurryface has been described not as an actual physical character but rather as a intangible character living inside of Tyler. Blurryface's presence first became known on the track "Fairly Local." The song, although very deep and dark, has a cheerful message in the beginning. Starting off with the chorus, Tyler sings "I'm fairly local, I've been around." This indicates that he is still staying true to his roots and feels a connection to his true fans who have been with him from the beginning. The first verse, however, takes on a slightly darker mood as Tyler vents about how the media criticized the depressing themes on "Vessel," the band's debut album. The bridge, however, is the darkest part of the song as it is supposed to represent Blurryface. With lines such as "Yo, this song will never be on the radio," it is clear that Blurryface wants Tyler to change the music style.
Basically blurryface comes into the song at the deep parts of the songs like what it just said in Farley local if you watched the video it has Tyler sing with a deep voice and red eyes, and in stressed out when it says, wake up you need to make money! That is blurryface yelling at him