K'mon K'mon has an impatient personality, he hates waiting in line but always finds one to wait in.
If someone is possessed by K'mon K'mon, they will start to become impatient.
Yo-kai Watch Animation series
He first appeared in the anime in EP027. He was extremely impatient to get a Yo-kai Watch Model Zero until he snapped and began to charge through the line. He was never officially defeated, though he did fight Jibanyan. In the second half of the episode, Nate was shown with a Model Zero, so his line crashing didn't affect Nate getting the new watch. It is revealed later in the series that Nate got Kmon-Kmon's medal.
He is first summoned in EP139 in an effort to deal with Ashitagirl, but he becomes the second Yo-kai to get an unlucky Sushi summon and ate wasabi sushi, like Jibanyan.