Heheheel has the appearance of a tan and maroon moray eel with yellow eyes and a purple tongue. The jar it comes out of is brown and green.
In the anime, despite his apparently insensitive disposition, Heheheel claims to have a compassionate side. Because he hates seeing people miserable, he Inspirits them so they can laugh their troubles away.
Makes people laugh at anything and everything, no matter the situation. In places like hospitals, this can cause awkward situations where laughter might be considered insensitive or inappropriate.
He can be found in the Seaside Cave at the end of San Fantastico
He can also be freed from the Crank-a-kai with light blue coins in the present.
Befriended (Yo-Kai Watch):"Your face is hilarious! I want to look at it every day!"
Receiving food (favorite): "Wahahaha!"
Receiving food (normal): "It's alright."
Receiving food (disliked): "*HURL*"
Freed from the Crank-a-Kai: "Ha ha ha! You broke me out, and now you're cracking me up!"
In EP036, Nate and Eddie visit Bear at the hospital as the latter had broken his leg, but Eddie begins laughing uproariously with no provocation. Nate identifies Heheheel and tries to summon Jibanyan and Dismarelda, but he cannot due to the Yo-kai Watches being obstructed. Heheheel is eventually knocked away from Eddie after the group is thrown out of an operating theater they blundered into, leaving Eddie miserable due to a spate of unfortunate incidents earlier on in the day. Heheheel explains that he Inspirited Eddie because he saw that Eddie was sad. Nate ends up bringing Eddie and Heheheel to the river where Eddie can laugh his troubles away without issue.
He was summoned off-screen in EP101 to join the party Nate was attending.
"Heheheel" is a portmanteau of hehehe and eel.
"Warautsubo" is a combination of warau (Japanese: 笑,"laugh"), tsubo (Japanese: 壷,"jar"), and utsubo (Japanese: ウツボ,"moray eel").