"That looks fun, can I try? (laughs) Evil Containment Wave, reverse!"
— Piccolo before performing the technique against Kami (inside Hero's body).
Evil Containment Wave Reflection (魔封波返し) is a technique developed by Piccolo. It allows him to reverse and capture the user of an Evil Containment Wave into a small container.
When Kami (in Hero's body) attempts to use an Evil Containment Wave to seal away Piccolo during their confrontation in the 23rd World Martial Arts Tournament, Piccolo counters with his Evil Containment Wave Reflection technique, reversing the wave and sealing Kami instead.