Kaomoji-kun is a new Japanese mascot/toy that represents the ultimate otaku. His face is made of Shift-JIS art (kinda like ASCII art) and there’s a whole back story about his nerdy lifestyle. He wakes up and goes to Akihabara every day. He hangs out in maid cafes, waits in line for silly collectibles, and eats junk food bought from convenience stores.
This funny little video explains.