Evil Containment Wave

Known as the Mafuba in Japanese, the Evil Containment Wave creates a spiraling green vortex that engulfs the target and funnels them into a container, which must then be sealed with a special paper talisman. Any container works, from a rice cooker to a small bottle, though smaller openings make aiming significantly harder. The technique demands enormous stamina from the user, and for weaker fighters, performing it is fatal. The more powerful the intended target, the more life force the technique drains. A sealing tag is absolutely essential; without one, even a successfully contained target can break free.

Master Mutaito created the Evil Containment Wave specifically to seal away King Piccolo during his original rampage, successfully trapping the demon king inside an Electric Rice Cooker at the cost of his own life. Years later, when King Piccolo was freed by Emperor Pilaf, Master Roshi attempted to use the technique again. He came heartbreakingly close to sealing Piccolo a second time but missed the container's opening at the last second. Roshi died from the strain shortly after. Tien Shinhan, who witnessed Roshi's attempt, taught himself the technique by mimicking what he saw. But when Tien finally confronted King Piccolo, his Rice Cooker was cracked, forcing him to abandon the plan entirely.

The Evil Containment Wave made a dramatic return in Dragon Ball Super during the battle against Future Zamasu. Piccolo suggested the technique as a way to deal with the immortal god, since sealing bypasses the need to actually destroy the target. Goku trained with Roshi overnight, practicing on Turtle until he mastered the technique. In the anime, Future Trunks ended up performing the technique instead, learning it from a phone video of Piccolo in mere minutes and successfully sealing Future Zamasu inside a jar. The triumph lasted only moments: back in the present, Piccolo discovered that Roshi had forgotten to send the sealing talisman. Without it, Zamasu broke free, horrified but very much uncontained. In the manga, Goku performed the sealing himself but grabbed the wrong tag from Roshi, leading to the same result through a different path of comedy and tragedy.