Stalker, old friend, professor, knight in shining armor, or guardian angel - however you want to look at it, the title would fit. But whatever you call him, make sure you include things like "gorgeous" or "hella hot" in the description. Gorgeous stalker. Hella hot old friend. Professor Yummy. Beautiful knight in shining armor. Handsome guardian angel. You get the gist. Whatever his official role in your eyes, we spend a lot of time with a watching and helpful Professor Cha in this episode.