Master Yi is good because he hates Noxian Scum
Master Yi was just a Wuju Bladesman in Ionia. He and his comrades practiced hard.
THAT WAS UNTIL THE FILTHY NOXIAN SCUM INVADED IONIA!!!!! Yi fought hard to protect his village from the Noxian forces, slicing through their damn ranks! http://66.media.tumblr.com/57f78dd31c629cb4a8443b75ec9e916b/tumblr_nvtgisrYSQ1upyoo8o1_1280.jpg
The filty Noxians were being forced back, that is, until they BOOMED THE VILLAGE http://pm1.narvii.com/5838/a2f8bcea2662a87c3b2a690607e4f2dd99b70aa8_hq.jpg
Nothing was left of the village, with Yi being the only survivor. http://vignette3.wikia.nocookie.net/leagueoflegends/images/b/bb/Ionia_Master_Yi_Village.jpg/revision/latest?cb=20150909064947
After that, Yi would seek out justice on Noxus and slay those who had wronged him! https://45.media.tumblr.com/70729ba6246104fa30d1d61f2aafa6ca/tumblr_n8ixieU2MF1tgxlxoo1_500.gif
But he would not let anger fuel his actions.... https://s-media-cache-ak0.pinimg.com/736x/08/5d/f7/085df703278a2937af332d28443c7e25.jpg
.... A lesson he learned from his student Wukong, the one who would keep the martial art of Wuju alive once Yi passed http://41.media.tumblr.com/9627a09b15bb6dbe2d33798c192839b7/tumblr_mp6159myXU1s5e3quo1_1280.png
