Monsters that suddenly began appearing one day. They are called E-beings because they resemble the hiragana character "e." They are generally weak, at a level where an average man can win in a one-on-one fight. Since they grant experience points when defeated, they are targeted by Tanakas worldwide.

An average male Tanaka. He is refreshing, sociable, and a generally nice guy. His strength is about the same as an ordinary person, with nothing particularly special to note.

A ripped, muscular Tanaka. He has gained power by defeating E-beings. His bench press is a staggering 1 ton. He likes strawberry-flavored protein. He is very conscious of his body odor and flies into a rage if anyone mentions how he smells.

The chosen hero recognized by the legendary Tanaka Sword. He has defeated a massive number of E-beings and is quite powerful. His ultimate move, the Tanaka Slash released from his sword, can cleave anything in two. He is the eternal rival of Demon King Tanaka.

The king of demons chosen by the legendary magic blade, Tanaka. He possesses overwhelming magical power to wipe out enemies and uses the magic blade Tanaka to cut down anyone who draws near. He is the eternal rival of Hero Tanaka.

The strongest Tanaka. The pinnacle of all Tanakas. He attained godhood by defeating countless other Tanakas with his overwhelming power.

A mad scientist conducting research at the Alto Laboratory. The only living being in this world who is not a Tanaka. He causes all sorts of trouble by stabbing people with syringes or mysterious liquids while insisting, "It's fine, really!"

The strongest man from the "E" realm who appears after a massive number of E-beings are defeated. He uses overwhelming power and does whatever he wants, from firing Kamehameha waves to Death Beams. He loves manga.